diff --git a/Misc/NEWS.d/next/C API/2023-06-08-21-12-44.gh-issue-67565.UkK3x-.rst b/Misc/NEWS.d/next/C API/2023-06-08-21-12-44.gh-issue-67565.UkK3x-.rst
new file mode 100644
index 00000000000..0e50976b0e1
--- /dev/null
+++ b/Misc/NEWS.d/next/C API/2023-06-08-21-12-44.gh-issue-67565.UkK3x-.rst	
@@ -0,0 +1 @@
+Remove redundant C-contiguity check in :file:`getargs.c`, :mod:`binascii`, :mod:`ssl` and Argument Clinic. Patched by Stefan Krah and Furkan Onder
diff --git a/Modules/_blake2/clinic/blake2b_impl.c.h b/Modules/_blake2/clinic/blake2b_impl.c.h
index 79b6e672005..47d62717eb7 100644
--- a/Modules/_blake2/clinic/blake2b_impl.c.h
+++ b/Modules/_blake2/clinic/blake2b_impl.c.h
@@ -98,10 +98,6 @@ skip_optional_posonly:
         if (PyObject_GetBuffer(fastargs[2], &key, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&key, 'C')) {
-            _PyArg_BadArgument("blake2b", "argument 'key'", "contiguous buffer", fastargs[2]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -110,10 +106,6 @@ skip_optional_posonly:
         if (PyObject_GetBuffer(fastargs[3], &salt, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&salt, 'C')) {
-            _PyArg_BadArgument("blake2b", "argument 'salt'", "contiguous buffer", fastargs[3]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -122,10 +114,6 @@ skip_optional_posonly:
         if (PyObject_GetBuffer(fastargs[4], &person, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&person, 'C')) {
-            _PyArg_BadArgument("blake2b", "argument 'person'", "contiguous buffer", fastargs[4]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -277,4 +265,4 @@ _blake2_blake2b_hexdigest(BLAKE2bObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _blake2_blake2b_hexdigest_impl(self);
 }
-/*[clinic end generated code: output=19b82b55c033d895 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e18eeaee40623bfc input=a9049054013a1b77]*/
diff --git a/Modules/_blake2/clinic/blake2s_impl.c.h b/Modules/_blake2/clinic/blake2s_impl.c.h
index 20446b335f8..7a0f6eeff5b 100644
--- a/Modules/_blake2/clinic/blake2s_impl.c.h
+++ b/Modules/_blake2/clinic/blake2s_impl.c.h
@@ -98,10 +98,6 @@ skip_optional_posonly:
         if (PyObject_GetBuffer(fastargs[2], &key, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&key, 'C')) {
-            _PyArg_BadArgument("blake2s", "argument 'key'", "contiguous buffer", fastargs[2]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -110,10 +106,6 @@ skip_optional_posonly:
         if (PyObject_GetBuffer(fastargs[3], &salt, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&salt, 'C')) {
-            _PyArg_BadArgument("blake2s", "argument 'salt'", "contiguous buffer", fastargs[3]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -122,10 +114,6 @@ skip_optional_posonly:
         if (PyObject_GetBuffer(fastargs[4], &person, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&person, 'C')) {
-            _PyArg_BadArgument("blake2s", "argument 'person'", "contiguous buffer", fastargs[4]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -277,4 +265,4 @@ _blake2_blake2s_hexdigest(BLAKE2sObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _blake2_blake2s_hexdigest_impl(self);
 }
-/*[clinic end generated code: output=79b3479e90f4d077 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=24690e4e2586cafd input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/bufferedio.c.h b/Modules/_io/clinic/bufferedio.c.h
index 83c97ae42db..f6ac2699135 100644
--- a/Modules/_io/clinic/bufferedio.c.h
+++ b/Modules/_io/clinic/bufferedio.c.h
@@ -30,10 +30,6 @@ _io__BufferedIOBase_readinto(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("readinto", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io__BufferedIOBase_readinto_impl(self, &buffer);
 
 exit:
@@ -66,10 +62,6 @@ _io__BufferedIOBase_readinto1(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("readinto1", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto1", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io__BufferedIOBase_readinto1_impl(self, &buffer);
 
 exit:
@@ -592,10 +584,6 @@ _io__Buffered_readinto(buffered *self, PyObject *arg)
         _PyArg_BadArgument("readinto", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io__Buffered_readinto_impl(self, &buffer);
 
 exit:
@@ -628,10 +616,6 @@ _io__Buffered_readinto1(buffered *self, PyObject *arg)
         _PyArg_BadArgument("readinto1", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto1", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io__Buffered_readinto1_impl(self, &buffer);
 
 exit:
@@ -945,10 +929,6 @@ _io_BufferedWriter_write(buffered *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("write", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io_BufferedWriter_write_impl(self, &buffer);
 
 exit:
@@ -1095,4 +1075,4 @@ skip_optional_pos:
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=b83f65fad0cd5fb6 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=090e70253e35fc22 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/bytesio.c.h b/Modules/_io/clinic/bytesio.c.h
index cf16335c935..37023e49087 100644
--- a/Modules/_io/clinic/bytesio.c.h
+++ b/Modules/_io/clinic/bytesio.c.h
@@ -332,10 +332,6 @@ _io_BytesIO_readinto(bytesio *self, PyObject *arg)
         _PyArg_BadArgument("readinto", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io_BytesIO_readinto_impl(self, &buffer);
 
 exit:
@@ -538,4 +534,4 @@ skip_optional_pos:
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=27333725edff70a0 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=2be0e05a8871b7e2 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/fileio.c.h b/Modules/_io/clinic/fileio.c.h
index 748bc9c644f..cf3ba28b066 100644
--- a/Modules/_io/clinic/fileio.c.h
+++ b/Modules/_io/clinic/fileio.c.h
@@ -249,10 +249,6 @@ _io_FileIO_readinto(fileio *self, PyTypeObject *cls, PyObject *const *args, Py_s
         _PyArg_BadArgument("readinto", "argument 1", "read-write bytes-like object", args[0]);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io_FileIO_readinto_impl(self, cls, &buffer);
 
 exit:
@@ -381,10 +377,6 @@ _io_FileIO_write(fileio *self, PyTypeObject *cls, PyObject *const *args, Py_ssiz
     if (PyObject_GetBuffer(args[0], &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&b, 'C')) {
-        _PyArg_BadArgument("write", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io_FileIO_write_impl(self, cls, &b);
 
 exit:
@@ -536,4 +528,4 @@ _io_FileIO_isatty(fileio *self, PyObject *Py_UNUSED(ignored))
 #ifndef _IO_FILEIO_TRUNCATE_METHODDEF
     #define _IO_FILEIO_TRUNCATE_METHODDEF
 #endif /* !defined(_IO_FILEIO_TRUNCATE_METHODDEF) */
-/*[clinic end generated code: output=10838003d15e7b3d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=1c0f4a36f76b0c6a input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/winconsoleio.c.h b/Modules/_io/clinic/winconsoleio.c.h
index f40786a96ca..6cab295c446 100644
--- a/Modules/_io/clinic/winconsoleio.c.h
+++ b/Modules/_io/clinic/winconsoleio.c.h
@@ -247,10 +247,6 @@ _io__WindowsConsoleIO_readinto(winconsoleio *self, PyTypeObject *cls, PyObject *
         _PyArg_BadArgument("readinto", "argument 1", "read-write bytes-like object", args[0]);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io__WindowsConsoleIO_readinto_impl(self, cls, &buffer);
 
 exit:
@@ -391,10 +387,6 @@ _io__WindowsConsoleIO_write(winconsoleio *self, PyTypeObject *cls, PyObject *con
     if (PyObject_GetBuffer(args[0], &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&b, 'C')) {
-        _PyArg_BadArgument("write", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io__WindowsConsoleIO_write_impl(self, cls, &b);
 
 exit:
@@ -465,4 +457,4 @@ _io__WindowsConsoleIO_isatty(winconsoleio *self, PyObject *Py_UNUSED(ignored))
 #ifndef _IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF
     #define _IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF
 #endif /* !defined(_IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF) */
-/*[clinic end generated code: output=2debef253fa1ab90 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=04108fc26b187386 input=a9049054013a1b77]*/
diff --git a/Modules/_multiprocessing/clinic/multiprocessing.c.h b/Modules/_multiprocessing/clinic/multiprocessing.c.h
index 70cdeef4821..6d4f5c2afcf 100644
--- a/Modules/_multiprocessing/clinic/multiprocessing.c.h
+++ b/Modules/_multiprocessing/clinic/multiprocessing.c.h
@@ -104,10 +104,6 @@ _multiprocessing_send(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[1], &buf, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buf, 'C')) {
-        _PyArg_BadArgument("send", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = _multiprocessing_send_impl(module, handle, &buf);
 
 exit:
@@ -168,4 +164,4 @@ exit:
 #ifndef _MULTIPROCESSING_SEND_METHODDEF
     #define _MULTIPROCESSING_SEND_METHODDEF
 #endif /* !defined(_MULTIPROCESSING_SEND_METHODDEF) */
-/*[clinic end generated code: output=48504f7a2d37958c input=a9049054013a1b77]*/
+/*[clinic end generated code: output=73b4cb8428d816da input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/clinic/blob.c.h b/Modules/_sqlite/clinic/blob.c.h
index 2c638173222..b95ba948aaf 100644
--- a/Modules/_sqlite/clinic/blob.c.h
+++ b/Modules/_sqlite/clinic/blob.c.h
@@ -88,10 +88,6 @@ blob_write(pysqlite_Blob *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("write", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = blob_write_impl(self, &data);
 
 exit:
@@ -215,4 +211,4 @@ blob_exit(pysqlite_Blob *self, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=27c24afc687bd772 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=31abd55660e0c5af input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/clinic/connection.c.h b/Modules/_sqlite/clinic/connection.c.h
index 46761cddd89..db5eb77891e 100644
--- a/Modules/_sqlite/clinic/connection.c.h
+++ b/Modules/_sqlite/clinic/connection.c.h
@@ -1557,10 +1557,6 @@ deserialize(pysqlite_Connection *self, PyObject *const *args, Py_ssize_t nargs,
         if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&data, 'C')) {
-            _PyArg_BadArgument("deserialize", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (!noptargs) {
         goto skip_optional_kwonly;
@@ -1822,4 +1818,4 @@ exit:
 #ifndef DESERIALIZE_METHODDEF
     #define DESERIALIZE_METHODDEF
 #endif /* !defined(DESERIALIZE_METHODDEF) */
-/*[clinic end generated code: output=b9c27a406e329587 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=90b5b9c14261b8d7 input=a9049054013a1b77]*/
diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index cecc3785c76..82b30da2f4e 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -4133,7 +4133,8 @@ _ssl__SSLContext_load_verify_locations_impl(PySSLContext *self,
             if (PyObject_GetBuffer(cadata, &buf, PyBUF_SIMPLE)) {
                 goto error;
             }
-            if (!PyBuffer_IsContiguous(&buf, 'C') || buf.ndim > 1) {
+            assert(PyBuffer_IsContiguous(&buf, 'C'));
+            if (buf.ndim > 1) {
                 PyBuffer_Release(&buf);
                 PyErr_SetString(PyExc_TypeError,
                                 "cadata should be a contiguous buffer with "
diff --git a/Modules/binascii.c b/Modules/binascii.c
index a87a2ef2e89..17970aa5e94 100644
--- a/Modules/binascii.c
+++ b/Modules/binascii.c
@@ -185,13 +185,7 @@ ascii_buffer_converter(PyObject *arg, Py_buffer *buf)
                      "not '%.100s'", Py_TYPE(arg)->tp_name);
         return 0;
     }
-    if (!PyBuffer_IsContiguous(buf, 'C')) {
-        PyErr_Format(PyExc_TypeError,
-                     "argument should be a contiguous buffer, "
-                     "not '%.100s'", Py_TYPE(arg)->tp_name);
-        PyBuffer_Release(buf);
-        return 0;
-    }
+    assert(PyBuffer_IsContiguous(buf, 'C'));
     return Py_CLEANUP_SUPPORTED;
 }
 
diff --git a/Modules/cjkcodecs/clinic/multibytecodec.c.h b/Modules/cjkcodecs/clinic/multibytecodec.c.h
index 4f2b91f3b19..305ade17b1f 100644
--- a/Modules/cjkcodecs/clinic/multibytecodec.c.h
+++ b/Modules/cjkcodecs/clinic/multibytecodec.c.h
@@ -154,10 +154,6 @@ _multibytecodec_MultibyteCodec_decode(MultibyteCodecObject *self, PyObject *cons
     if (PyObject_GetBuffer(args[0], &input, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&input, 'C')) {
-        _PyArg_BadArgument("decode", "argument 'input'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -374,10 +370,6 @@ _multibytecodec_MultibyteIncrementalDecoder_decode(MultibyteIncrementalDecoderOb
     if (PyObject_GetBuffer(args[0], &input, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&input, 'C')) {
-        _PyArg_BadArgument("decode", "argument 'input'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -690,4 +682,4 @@ PyDoc_STRVAR(_multibytecodec___create_codec__doc__,
 
 #define _MULTIBYTECODEC___CREATE_CODEC_METHODDEF    \
     {"__create_codec", (PyCFunction)_multibytecodec___create_codec, METH_O, _multibytecodec___create_codec__doc__},
-/*[clinic end generated code: output=38f8d42721eea1e6 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=219a363662d2fbff input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_bz2module.c.h b/Modules/clinic/_bz2module.c.h
index b665c01f1a9..de7b3993596 100644
--- a/Modules/clinic/_bz2module.c.h
+++ b/Modules/clinic/_bz2module.c.h
@@ -35,10 +35,6 @@ _bz2_BZ2Compressor_compress(BZ2Compressor *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("compress", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _bz2_BZ2Compressor_compress_impl(self, &data);
 
 exit:
@@ -181,10 +177,6 @@ _bz2_BZ2Decompressor_decompress(BZ2Decompressor *self, PyObject *const *args, Py
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("decompress", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -242,4 +234,4 @@ _bz2_BZ2Decompressor(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=90f7b5c451c0a8bf input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8daa62f47cc4853d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_codecsmodule.c.h b/Modules/clinic/_codecsmodule.c.h
index d69b6824fb7..12fea806ab5 100644
--- a/Modules/clinic/_codecsmodule.c.h
+++ b/Modules/clinic/_codecsmodule.c.h
@@ -303,10 +303,6 @@ _codecs_escape_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&data, 'C')) {
-            _PyArg_BadArgument("escape_decode", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (nargs < 2) {
         goto skip_optional;
@@ -422,10 +418,6 @@ _codecs_utf_7_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_7_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -492,10 +484,6 @@ _codecs_utf_8_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_8_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -562,10 +550,6 @@ _codecs_utf_16_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_16_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -632,10 +616,6 @@ _codecs_utf_16_le_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_16_le_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -702,10 +682,6 @@ _codecs_utf_16_be_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_16_be_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -774,10 +750,6 @@ _codecs_utf_16_ex_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_16_ex_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -851,10 +823,6 @@ _codecs_utf_32_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_32_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -921,10 +889,6 @@ _codecs_utf_32_le_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_32_le_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -991,10 +955,6 @@ _codecs_utf_32_be_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_32_be_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1063,10 +1023,6 @@ _codecs_utf_32_ex_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_32_ex_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1149,10 +1105,6 @@ _codecs_unicode_escape_decode(PyObject *module, PyObject *const *args, Py_ssize_
         if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&data, 'C')) {
-            _PyArg_BadArgument("unicode_escape_decode", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (nargs < 2) {
         goto skip_optional;
@@ -1229,10 +1181,6 @@ _codecs_raw_unicode_escape_decode(PyObject *module, PyObject *const *args, Py_ss
         if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&data, 'C')) {
-            _PyArg_BadArgument("raw_unicode_escape_decode", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (nargs < 2) {
         goto skip_optional;
@@ -1299,10 +1247,6 @@ _codecs_latin_1_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("latin_1_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1361,10 +1305,6 @@ _codecs_ascii_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("ascii_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1424,10 +1364,6 @@ _codecs_charmap_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("charmap_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1493,10 +1429,6 @@ _codecs_mbcs_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("mbcs_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1567,10 +1499,6 @@ _codecs_oem_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("oem_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1646,10 +1574,6 @@ _codecs_code_page_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[1], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("code_page_decode", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (nargs < 3) {
         goto skip_optional;
     }
@@ -1726,10 +1650,6 @@ _codecs_readbuffer_encode(PyObject *module, PyObject *const *args, Py_ssize_t na
         if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&data, 'C')) {
-            _PyArg_BadArgument("readbuffer_encode", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (nargs < 2) {
         goto skip_optional;
@@ -2818,4 +2738,4 @@ exit:
 #ifndef _CODECS_CODE_PAGE_ENCODE_METHODDEF
     #define _CODECS_CODE_PAGE_ENCODE_METHODDEF
 #endif /* !defined(_CODECS_CODE_PAGE_ENCODE_METHODDEF) */
-/*[clinic end generated code: output=40cf63bf2da18359 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d8d9e372f7ccba35 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_hashopenssl.c.h b/Modules/clinic/_hashopenssl.c.h
index dc28aaca1f7..58650dff288 100644
--- a/Modules/clinic/_hashopenssl.c.h
+++ b/Modules/clinic/_hashopenssl.c.h
@@ -1290,17 +1290,9 @@ pbkdf2_hmac(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (PyObject_GetBuffer(args[1], &password, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&password, 'C')) {
-        _PyArg_BadArgument("pbkdf2_hmac", "argument 'password'", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[2], &salt, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&salt, 'C')) {
-        _PyArg_BadArgument("pbkdf2_hmac", "argument 'salt'", "contiguous buffer", args[2]);
-        goto exit;
-    }
     iterations = PyLong_AsLong(args[3]);
     if (iterations == -1 && PyErr_Occurred()) {
         goto exit;
@@ -1388,10 +1380,6 @@ _hashlib_scrypt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     if (PyObject_GetBuffer(args[0], &password, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&password, 'C')) {
-        _PyArg_BadArgument("scrypt", "argument 'password'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_kwonly;
     }
@@ -1399,10 +1387,6 @@ _hashlib_scrypt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         if (PyObject_GetBuffer(args[1], &salt, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&salt, 'C')) {
-            _PyArg_BadArgument("scrypt", "argument 'salt'", "contiguous buffer", args[1]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -1522,17 +1506,9 @@ _hashlib_hmac_singleshot(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &key, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&key, 'C')) {
-        _PyArg_BadArgument("hmac_digest", "argument 'key'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[1], &msg, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&msg, 'C')) {
-        _PyArg_BadArgument("hmac_digest", "argument 'msg'", "contiguous buffer", args[1]);
-        goto exit;
-    }
     digest = args[2];
     return_value = _hashlib_hmac_singleshot_impl(module, &key, &msg, digest);
 
@@ -1604,10 +1580,6 @@ _hashlib_hmac_new(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
     if (PyObject_GetBuffer(args[0], &key, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&key, 'C')) {
-        _PyArg_BadArgument("hmac_new", "argument 'key'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -1852,4 +1824,4 @@ exit:
 #ifndef _HASHLIB_SCRYPT_METHODDEF
     #define _HASHLIB_SCRYPT_METHODDEF
 #endif /* !defined(_HASHLIB_SCRYPT_METHODDEF) */
-/*[clinic end generated code: output=21ad88d46922dc00 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b7eddeb3d6ccdeec input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_lzmamodule.c.h b/Modules/clinic/_lzmamodule.c.h
index 1079b409a6b..51fab5eab3f 100644
--- a/Modules/clinic/_lzmamodule.c.h
+++ b/Modules/clinic/_lzmamodule.c.h
@@ -35,10 +35,6 @@ _lzma_LZMACompressor_compress(Compressor *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("compress", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _lzma_LZMACompressor_compress_impl(self, &data);
 
 exit:
@@ -139,10 +135,6 @@ _lzma_LZMADecompressor_decompress(Decompressor *self, PyObject *const *args, Py_
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("decompress", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -325,10 +317,6 @@ _lzma__decode_filter_properties(PyObject *module, PyObject *const *args, Py_ssiz
     if (PyObject_GetBuffer(args[1], &encoded_props, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&encoded_props, 'C')) {
-        _PyArg_BadArgument("_decode_filter_properties", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = _lzma__decode_filter_properties_impl(module, filter_id, &encoded_props);
 
 exit:
@@ -339,4 +327,4 @@ exit:
 
     return return_value;
 }
-/*[clinic end generated code: output=fca7d2b5800dc4c1 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5e79c05ace76dc96 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_ssl.c.h b/Modules/clinic/_ssl.c.h
index bc692518e54..88401b0490a 100644
--- a/Modules/clinic/_ssl.c.h
+++ b/Modules/clinic/_ssl.c.h
@@ -237,10 +237,6 @@ _ssl__SSLSocket_write(PySSLSocket *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&b, 'C')) {
-        _PyArg_BadArgument("write", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _ssl__SSLSocket_write_impl(self, &b);
 
 exit:
@@ -530,10 +526,6 @@ _ssl__SSLContext__set_alpn_protocols(PySSLContext *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &protos, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&protos, 'C')) {
-        _PyArg_BadArgument("_set_alpn_protocols", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _ssl__SSLContext__set_alpn_protocols_impl(self, &protos);
 
 exit:
@@ -1108,10 +1100,6 @@ _ssl_MemoryBIO_write(PySSLMemoryBIO *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&b, 'C')) {
-        _PyArg_BadArgument("write", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _ssl_MemoryBIO_write_impl(self, &b);
 
 exit:
@@ -1180,10 +1168,6 @@ _ssl_RAND_add(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         if (PyObject_GetBuffer(args[0], &view, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&view, 'C')) {
-            _PyArg_BadArgument("RAND_add", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (PyFloat_CheckExact(args[1])) {
         entropy = PyFloat_AS_DOUBLE(args[1]);
@@ -1543,4 +1527,4 @@ exit:
 #ifndef _SSL_ENUM_CRLS_METHODDEF
     #define _SSL_ENUM_CRLS_METHODDEF
 #endif /* !defined(_SSL_ENUM_CRLS_METHODDEF) */
-/*[clinic end generated code: output=f15635b2faa3b2db input=a9049054013a1b77]*/
+/*[clinic end generated code: output=aa6b0a898b6077fe input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_struct.c.h b/Modules/clinic/_struct.c.h
index 45d90710c54..e5118fbdb3b 100644
--- a/Modules/clinic/_struct.c.h
+++ b/Modules/clinic/_struct.c.h
@@ -94,10 +94,6 @@ Struct_unpack(PyStructObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("unpack", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = Struct_unpack_impl(self, &buffer);
 
 exit:
@@ -170,10 +166,6 @@ Struct_unpack_from(PyStructObject *self, PyObject *const *args, Py_ssize_t nargs
     if (PyObject_GetBuffer(args[0], &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("unpack_from", "argument 'buffer'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -300,10 +292,6 @@ unpack(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[1], &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("unpack", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = unpack_impl(module, s_object, &buffer);
 
 exit:
@@ -379,10 +367,6 @@ unpack_from(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (PyObject_GetBuffer(args[1], &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("unpack_from", "argument 'buffer'", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -452,4 +436,4 @@ exit:
 
     return return_value;
 }
-/*[clinic end generated code: output=1749aaf639d5c11c input=a9049054013a1b77]*/
+/*[clinic end generated code: output=6a20e87f9b298b14 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/arraymodule.c.h b/Modules/clinic/arraymodule.c.h
index bff9fd3c87b..dbce0313541 100644
--- a/Modules/clinic/arraymodule.c.h
+++ b/Modules/clinic/arraymodule.c.h
@@ -442,10 +442,6 @@ array_array_frombytes(arrayobject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("frombytes", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = array_array_frombytes_impl(self, &buffer);
 
 exit:
@@ -671,4 +667,4 @@ PyDoc_STRVAR(array_arrayiterator___setstate____doc__,
 
 #define ARRAY_ARRAYITERATOR___SETSTATE___METHODDEF    \
     {"__setstate__", (PyCFunction)array_arrayiterator___setstate__, METH_O, array_arrayiterator___setstate____doc__},
-/*[clinic end generated code: output=d58693e1157540ef input=a9049054013a1b77]*/
+/*[clinic end generated code: output=bf086c01e7e482bf input=a9049054013a1b77]*/
diff --git a/Modules/clinic/binascii.c.h b/Modules/clinic/binascii.c.h
index b80983ca9a1..1adca415dfe 100644
--- a/Modules/clinic/binascii.c.h
+++ b/Modules/clinic/binascii.c.h
@@ -92,10 +92,6 @@ binascii_b2a_uu(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("b2a_uu", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_kwonly;
     }
@@ -243,10 +239,6 @@ binascii_b2a_base64(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("b2a_base64", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_kwonly;
     }
@@ -291,10 +283,6 @@ binascii_crc_hqx(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("crc_hqx", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     crc = (unsigned int)PyLong_AsUnsignedLongMask(args[1]);
     if (crc == (unsigned int)-1 && PyErr_Occurred()) {
         goto exit;
@@ -336,10 +324,6 @@ binascii_crc32(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("crc32", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -435,10 +419,6 @@ binascii_b2a_hex(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("b2a_hex", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -528,10 +508,6 @@ binascii_hexlify(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("hexlify", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -755,10 +731,6 @@ binascii_b2a_qp(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("b2a_qp", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -795,4 +767,4 @@ exit:
 
     return return_value;
 }
-/*[clinic end generated code: output=3259f3b018abee96 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=968767b663ed889d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/overlapped.c.h b/Modules/clinic/overlapped.c.h
index 8e1d719e443..8b285e4a8f0 100644
--- a/Modules/clinic/overlapped.c.h
+++ b/Modules/clinic/overlapped.c.h
@@ -624,10 +624,6 @@ _overlapped_Overlapped_ReadFileInto(OverlappedObject *self, PyObject *const *arg
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("ReadFileInto", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = _overlapped_Overlapped_ReadFileInto_impl(self, handle, &bufobj);
 
 exit:
@@ -715,10 +711,6 @@ _overlapped_Overlapped_WSARecvInto(OverlappedObject *self, PyObject *const *args
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("WSARecvInto", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!_PyLong_UnsignedLong_Converter(args[2], &flags)) {
         goto exit;
     }
@@ -763,10 +755,6 @@ _overlapped_Overlapped_WriteFile(OverlappedObject *self, PyObject *const *args,
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("WriteFile", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = _overlapped_Overlapped_WriteFile_impl(self, handle, &bufobj);
 
 exit:
@@ -809,10 +797,6 @@ _overlapped_Overlapped_WSASend(OverlappedObject *self, PyObject *const *args, Py
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("WSASend", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!_PyLong_UnsignedLong_Converter(args[2], &flags)) {
         goto exit;
     }
@@ -1138,10 +1122,6 @@ _overlapped_Overlapped_WSASendTo(OverlappedObject *self, PyObject *const *args,
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("WSASendTo", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!_PyLong_UnsignedLong_Converter(args[2], &flags)) {
         goto exit;
     }
@@ -1239,10 +1219,6 @@ _overlapped_Overlapped_WSARecvFromInto(OverlappedObject *self, PyObject *const *
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("WSARecvFromInto", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!_PyLong_UnsignedLong_Converter(args[2], &size)) {
         goto exit;
     }
@@ -1263,4 +1239,4 @@ exit:
 
     return return_value;
 }
-/*[clinic end generated code: output=85884c2341fcbef7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=958cbddbcc355f47 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/posixmodule.c.h b/Modules/clinic/posixmodule.c.h
index 29c90c5c261..9473dd70ff1 100644
--- a/Modules/clinic/posixmodule.c.h
+++ b/Modules/clinic/posixmodule.c.h
@@ -7208,10 +7208,6 @@ os_write(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[1], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("write", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     _return_value = os_write_impl(module, fd, &data);
     if ((_return_value == -1) && PyErr_Occurred()) {
         goto exit;
@@ -7810,10 +7806,6 @@ os_pwrite(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[1], &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("pwrite", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!Py_off_t_converter(args[2], &offset)) {
         goto exit;
     }
@@ -10252,10 +10244,6 @@ os_setxattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (PyObject_GetBuffer(args[2], &value, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&value, 'C')) {
-        _PyArg_BadArgument("setxattr", "argument 'value'", "contiguous buffer", args[2]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -12415,4 +12403,4 @@ exit:
 #ifndef OS_WAITSTATUS_TO_EXITCODE_METHODDEF
     #define OS_WAITSTATUS_TO_EXITCODE_METHODDEF
 #endif /* !defined(OS_WAITSTATUS_TO_EXITCODE_METHODDEF) */
-/*[clinic end generated code: output=274174066fff3256 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a05abdc48e3def44 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/zlibmodule.c.h b/Modules/clinic/zlibmodule.c.h
index 850a4cd9652..6b09abe309b 100644
--- a/Modules/clinic/zlibmodule.c.h
+++ b/Modules/clinic/zlibmodule.c.h
@@ -70,10 +70,6 @@ zlib_compress(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("compress", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -164,10 +160,6 @@ zlib_decompress(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("decompress", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -334,10 +326,6 @@ zlib_compressobj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     if (PyObject_GetBuffer(args[5], &zdict, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&zdict, 'C')) {
-        _PyArg_BadArgument("compressobj", "argument 'zdict'", "contiguous buffer", args[5]);
-        goto exit;
-    }
 skip_optional_pos:
     return_value = zlib_compressobj_impl(module, level, method, wbits, memLevel, strategy, &zdict);
 
@@ -473,10 +461,6 @@ zlib_Compress_compress(compobject *self, PyTypeObject *cls, PyObject *const *arg
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("compress", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = zlib_Compress_compress_impl(self, cls, &data);
 
 exit:
@@ -553,10 +537,6 @@ zlib_Decompress_decompress(compobject *self, PyTypeObject *cls, PyObject *const
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("decompress", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -965,10 +945,6 @@ zlib_ZlibDecompressor_decompress(ZlibDecompressor *self, PyObject *const *args,
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("decompress", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -1026,10 +1002,6 @@ zlib_adler32(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("adler32", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1080,10 +1052,6 @@ zlib_crc32(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("crc32", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1130,4 +1098,4 @@ exit:
 #ifndef ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF
     #define ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF
 #endif /* !defined(ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF) */
-/*[clinic end generated code: output=bd96ba786b0d8d42 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=6dd97dc851c39031 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/bytearrayobject.c.h b/Objects/clinic/bytearrayobject.c.h
index 02b9b57ca13..d95245067e2 100644
--- a/Objects/clinic/bytearrayobject.c.h
+++ b/Objects/clinic/bytearrayobject.c.h
@@ -162,10 +162,6 @@ bytearray_removeprefix(PyByteArrayObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &prefix, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&prefix, 'C')) {
-        _PyArg_BadArgument("removeprefix", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytearray_removeprefix_impl(self, &prefix);
 
 exit:
@@ -202,10 +198,6 @@ bytearray_removesuffix(PyByteArrayObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &suffix, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&suffix, 'C')) {
-        _PyArg_BadArgument("removesuffix", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytearray_removesuffix_impl(self, &suffix);
 
 exit:
@@ -316,17 +308,9 @@ bytearray_maketrans(void *null, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &frm, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&frm, 'C')) {
-        _PyArg_BadArgument("maketrans", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[1], &to, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&to, 'C')) {
-        _PyArg_BadArgument("maketrans", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = bytearray_maketrans_impl(&frm, &to);
 
 exit:
@@ -376,17 +360,9 @@ bytearray_replace(PyByteArrayObject *self, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &old, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&old, 'C')) {
-        _PyArg_BadArgument("replace", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[1], &new, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&new, 'C')) {
-        _PyArg_BadArgument("replace", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (nargs < 3) {
         goto skip_optional;
     }
@@ -1285,4 +1261,4 @@ bytearray_sizeof(PyByteArrayObject *self, PyObject *Py_UNUSED(ignored))
 {
     return bytearray_sizeof_impl(self);
 }
-/*[clinic end generated code: output=fc2b9ccabe0e6782 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=0797a5e03cda2a16 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/bytesobject.c.h b/Objects/clinic/bytesobject.c.h
index 8b08f8edb62..1e45be3e7ae 100644
--- a/Objects/clinic/bytesobject.c.h
+++ b/Objects/clinic/bytesobject.c.h
@@ -141,10 +141,6 @@ bytes_partition(PyBytesObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &sep, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&sep, 'C')) {
-        _PyArg_BadArgument("partition", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytes_partition_impl(self, &sep);
 
 exit:
@@ -184,10 +180,6 @@ bytes_rpartition(PyBytesObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &sep, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&sep, 'C')) {
-        _PyArg_BadArgument("rpartition", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytes_rpartition_impl(self, &sep);
 
 exit:
@@ -503,17 +495,9 @@ bytes_maketrans(void *null, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &frm, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&frm, 'C')) {
-        _PyArg_BadArgument("maketrans", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[1], &to, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&to, 'C')) {
-        _PyArg_BadArgument("maketrans", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = bytes_maketrans_impl(&frm, &to);
 
 exit:
@@ -563,17 +547,9 @@ bytes_replace(PyBytesObject *self, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &old, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&old, 'C')) {
-        _PyArg_BadArgument("replace", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[1], &new, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&new, 'C')) {
-        _PyArg_BadArgument("replace", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (nargs < 3) {
         goto skip_optional;
     }
@@ -629,10 +605,6 @@ bytes_removeprefix(PyBytesObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &prefix, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&prefix, 'C')) {
-        _PyArg_BadArgument("removeprefix", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytes_removeprefix_impl(self, &prefix);
 
 exit:
@@ -669,10 +641,6 @@ bytes_removesuffix(PyBytesObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &suffix, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&suffix, 'C')) {
-        _PyArg_BadArgument("removesuffix", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytes_removesuffix_impl(self, &suffix);
 
 exit:
@@ -1061,4 +1029,4 @@ skip_optional_pos:
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=da013a7e257f5c6e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8a49dbbd78914a6f input=a9049054013a1b77]*/
diff --git a/Python/clinic/import.c.h b/Python/clinic/import.c.h
index 3ecd2acb1cd..5edeaef656e 100644
--- a/Python/clinic/import.c.h
+++ b/Python/clinic/import.c.h
@@ -605,10 +605,6 @@ _imp_source_hash(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     if (PyObject_GetBuffer(args[1], &source, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&source, 'C')) {
-        _PyArg_BadArgument("source_hash", "argument 'source'", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = _imp_source_hash_impl(module, key, &source);
 
 exit:
@@ -627,4 +623,4 @@ exit:
 #ifndef _IMP_EXEC_DYNAMIC_METHODDEF
     #define _IMP_EXEC_DYNAMIC_METHODDEF
 #endif /* !defined(_IMP_EXEC_DYNAMIC_METHODDEF) */
-/*[clinic end generated code: output=c37ad1bf06f9e947 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=dbd63707bd40b07c input=a9049054013a1b77]*/
diff --git a/Python/clinic/marshal.c.h b/Python/clinic/marshal.c.h
index ecde4f6482d..e6b0f1999a4 100644
--- a/Python/clinic/marshal.c.h
+++ b/Python/clinic/marshal.c.h
@@ -143,10 +143,6 @@ marshal_loads(PyObject *module, PyObject *arg)
     if (PyObject_GetBuffer(arg, &bytes, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bytes, 'C')) {
-        _PyArg_BadArgument("loads", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = marshal_loads_impl(module, &bytes);
 
 exit:
@@ -157,4 +153,4 @@ exit:
 
     return return_value;
 }
-/*[clinic end generated code: output=99ba446b1a75a269 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=92d2d47aac9128ee input=a9049054013a1b77]*/
diff --git a/Python/getargs.c b/Python/getargs.c
index 80d2540a694..5a12ca8def7 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -1187,17 +1187,15 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
                 arg, msgbuf, bufsize);
         format++;
 
-        /* Caller is interested in Py_buffer, and the object
-           supports it directly. */
+        /* Caller is interested in Py_buffer, and the object supports it
+           directly. The request implicitly asks for PyBUF_SIMPLE, so the
+           result is C-contiguous with format 'B'. */
         if (PyObject_GetBuffer(arg, (Py_buffer*)p, PyBUF_WRITABLE) < 0) {
             PyErr_Clear();
             return converterr("read-write bytes-like object",
                               arg, msgbuf, bufsize);
         }
-        if (!PyBuffer_IsContiguous((Py_buffer*)p, 'C')) {
-            PyBuffer_Release((Py_buffer*)p);
-            return converterr("contiguous buffer", arg, msgbuf, bufsize);
-        }
+        assert(PyBuffer_IsContiguous((Py_buffer *)p, 'C'));
         if (addcleanup(p, freelist, cleanup_buffer)) {
             return converterr(
                 "(cleanup problem)",
@@ -1242,15 +1240,12 @@ convertbuffer(PyObject *arg, const void **p, const char **errmsg)
 static int
 getbuffer(PyObject *arg, Py_buffer *view, const char **errmsg)
 {
+    /* PyBUF_SIMPLE implies C-contiguous */
     if (PyObject_GetBuffer(arg, view, PyBUF_SIMPLE) != 0) {
         *errmsg = "bytes-like object";
         return -1;
     }
-    if (!PyBuffer_IsContiguous(view, 'C')) {
-        PyBuffer_Release(view);
-        *errmsg = "contiguous buffer";
-        return -1;
-    }
+    assert(PyBuffer_IsContiguous(view, 'C'));
     return 0;
 }
 
diff --git a/Tools/clinic/clinic.py b/Tools/clinic/clinic.py
index 8a4bbcbe7f6..5f94b90ae09 100755
--- a/Tools/clinic/clinic.py
+++ b/Tools/clinic/clinic.py
@@ -4605,15 +4605,12 @@ class Py_buffer_converter(CConverter):
         return "".join(["if (", name, ".obj) {\n   PyBuffer_Release(&", name, ");\n}\n"])
 
     def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
+        # PyBUF_SIMPLE guarantees that the format units of the buffers are C-contiguous.
         if self.format_unit == 'y*':
             return self.format_code("""
                 if (PyObject_GetBuffer({argname}, &{paramname}, PyBUF_SIMPLE) != 0) {{{{
                     goto exit;
                 }}}}
-                if (!PyBuffer_IsContiguous(&{paramname}, 'C')) {{{{
-                    {bad_argument}
-                    goto exit;
-                }}}}
                 """,
                 argname=argname,
                 bad_argument=self.bad_argument(displayname, 'contiguous buffer', limited_capi=limited_capi),
@@ -4632,10 +4629,6 @@ class Py_buffer_converter(CConverter):
                     if (PyObject_GetBuffer({argname}, &{paramname}, PyBUF_SIMPLE) != 0) {{{{
                         goto exit;
                     }}}}
-                    if (!PyBuffer_IsContiguous(&{paramname}, 'C')) {{{{
-                        {bad_argument}
-                        goto exit;
-                    }}}}
                 }}}}
                 """,
                 argname=argname,
@@ -4647,10 +4640,6 @@ class Py_buffer_converter(CConverter):
                     {bad_argument}
                     goto exit;
                 }}}}
-                if (!PyBuffer_IsContiguous(&{paramname}, 'C')) {{{{
-                    {bad_argument2}
-                    goto exit;
-                }}}}
                 """,
                 argname=argname,
                 bad_argument=self.bad_argument(displayname, 'read-write bytes-like object', limited_capi=limited_capi),