cpython/Objects/stringlib
Miss Islington (bot) 190433d815
closes bpo-39605: Fix some casts to not cast away const. (GH-18453)
gcc -Wcast-qual turns up a number of instances of casting away constness of pointers. Some of these can be safely modified, by either:

Adding the const to the type cast, as in:

-    return _PyUnicode_FromUCS1((unsigned char*)s, size);
+    return _PyUnicode_FromUCS1((const unsigned char*)s, size);

or, Removing the cast entirely, because it's not necessary (but probably was at one time), as in:

-    PyDTrace_FUNCTION_ENTRY((char *)filename, (char *)funcname, lineno);
+    PyDTrace_FUNCTION_ENTRY(filename, funcname, lineno);

These changes will not change code, but they will make it much easier to check for errors in consts
(cherry picked from commit e6be9b59a9)

Co-authored-by: Andy Lester <andy@petdance.com>
2020-02-11 18:47:20 -08:00
..
clinic [3.8] bpo-37034: Display argument name on errors with keyword arguments with Argument Clinic. (GH-13593). (GH-15599) 2019-08-29 18:29:59 +03:00
README.txt s/stringobject/bytesobject/ (closes #22036) 2014-07-23 21:39:37 -07:00
asciilib.h closes bpo-39605: Fix some casts to not cast away const. (GH-18453) 2020-02-11 18:47:20 -08:00
codecs.h closes bpo-39605: Fix some casts to not cast away const. (GH-18453) 2020-02-11 18:47:20 -08:00
count.h Implement PEP 393. 2011-09-28 07:41:54 +02:00
ctype.h bpo-33012: Fix invalid function cast warnings with gcc 8 for METH_NOARGS. (GH-6030) 2018-04-29 21:59:33 +03:00
eq.h bpo-31338 (#3374) 2017-09-14 18:13:16 -07:00
fastsearch.h Doc: Fix typo in fastsearch comments (GH-14608) (GH-15933) 2019-09-11 15:05:49 +02:00
find.h Issue #26765: Moved common code and docstrings for bytes and bytearray methods 2016-05-04 22:23:26 +03:00
find_max_char.h closes bpo-39605: Fix some casts to not cast away const. (GH-18453) 2020-02-11 18:47:20 -08:00
join.h Issue #28126: Replace Py_MEMCPY with memcpy(). Visual Studio can properly optimize memcpy(). 2016-09-13 20:22:02 +02:00
localeutil.h bpo-33954: Fix _PyUnicode_InsertThousandsGrouping() (GH-10623) 2018-11-26 13:40:01 +01:00
partition.h Issue #18408: Fix bytearrayiter.partition()/rpartition(), handle 2013-10-29 03:15:37 +01:00
replace.h Issue #16061: Speed up str.replace() for replacing 1-character strings. 2013-04-13 22:45:04 +03:00
split.h Issue #18722: Remove uses of the "register" keyword in C code. 2013-08-13 20:18:52 +02:00
stringdefs.h stringlib: remove unused STRINGLIB_RESIZE macro 2013-04-14 16:29:09 +02:00
transmogrify.h bpo-20180: complete AC conversion of Objects/stringlib/transmogrify.h (GH-8039) 2018-07-06 13:17:38 +03:00
ucs1lib.h stringlib: remove unused STRINGLIB_RESIZE macro 2013-04-14 16:29:09 +02:00
ucs2lib.h stringlib: remove unused STRINGLIB_RESIZE macro 2013-04-14 16:29:09 +02:00
ucs4lib.h stringlib: remove unused STRINGLIB_RESIZE macro 2013-04-14 16:29:09 +02:00
undef.h stringlib: remove unused STRINGLIB_RESIZE macro 2013-04-14 16:29:09 +02:00
unicode_format.h Improve exception message for str.format (GH-12675) 2019-06-01 10:14:00 -07:00
unicodedefs.h Issue #18701: Remove support of old CPython versions (<3.0) from C code. 2013-08-17 00:48:02 +03:00

README.txt

bits shared by the bytesobject and unicodeobject implementations (and
possibly other modules, in a not too distant future).

the stuff in here is included into relevant places; see the individual
source files for details.

--------------------------------------------------------------------
the following defines used by the different modules:

STRINGLIB_CHAR

    the type used to hold a character (char or Py_UNICODE)

STRINGLIB_EMPTY

    a PyObject representing the empty string, only to be used if
    STRINGLIB_MUTABLE is 0

Py_ssize_t STRINGLIB_LEN(PyObject*)

    returns the length of the given string object (which must be of the
    right type)

PyObject* STRINGLIB_NEW(STRINGLIB_CHAR*, Py_ssize_t)

    creates a new string object

STRINGLIB_CHAR* STRINGLIB_STR(PyObject*)

    returns the pointer to the character data for the given string
    object (which must be of the right type)

int STRINGLIB_CHECK_EXACT(PyObject *)

    returns true if the object is an instance of our type, not a subclass

STRINGLIB_MUTABLE

    must be 0 or 1 to tell the cpp macros in stringlib code if the object
    being operated on is mutable or not