Issue #16847: Fixed improper use of _PyUnicode_CheckConsistency() in

non-pydebug builds. Several extension modules now compile cleanly when
assert()s are enabled in standard builds (-DDEBUG flag).

Misc/NEWS

@@ -4293,6 +4293,10 @@ Tools/Demos
 Extension Modules
 -----------------
 
+- Issue #16847: Fixed improper use of _PyUnicode_CheckConsistency() in
+  non-pydebug builds. Several extension modules now compile cleanly when
+  assert()s are enabled in standard builds (-DDEBUG flag).
+
 - Issue #13840: The error message produced by ctypes.create_string_buffer
   when given a Unicode string has been fixed.
 

Modules/_json.c

@@ -246,7 +246,9 @@ ascii_escape_unicode(PyObject *pystr)
         }
     }
     output[chars++] = '"';
+#ifdef Py_DEBUG
     assert(_PyUnicode_CheckConsistency(rval, 1));
+#endif
     return rval;
 }
 

Modules/md5module.c

@@ -399,7 +399,9 @@ MD5_hexdigest(MD5object *self, PyObject *unused)
         c = (digest[i] & 0xf);
         hex_digest[j++] = Py_hexdigits[c];
     }
+#ifdef Py_DEBUG
     assert(_PyUnicode_CheckConsistency(retval, 1));
+#endif
     return retval;
 }
 

Modules/sha1module.c

@@ -376,7 +376,9 @@ SHA1_hexdigest(SHA1object *self, PyObject *unused)
         c = (digest[i] & 0xf);
         hex_digest[j++] = Py_hexdigits[c];
     }
+#ifdef Py_DEBUG
     assert(_PyUnicode_CheckConsistency(retval, 1));
+#endif
     return retval;
 }
 

Modules/sha256module.c

@@ -466,7 +466,9 @@ SHA256_hexdigest(SHAobject *self, PyObject *unused)
         c = (digest[i] & 0xf);
         hex_digest[j++] = Py_hexdigits[c];
     }
+#ifdef Py_DEBUG
     assert(_PyUnicode_CheckConsistency(retval, 1));
+#endif
     return retval;
 }
 

Modules/sha512module.c

@@ -532,7 +532,9 @@ SHA512_hexdigest(SHAobject *self, PyObject *unused)
         c = (digest[i] & 0xf);
         hex_digest[j++] = Py_hexdigits[c];
     }
+#ifdef Py_DEBUG
     assert(_PyUnicode_CheckConsistency(retval, 1));
+#endif
     return retval;
 }