Carlos O'Donell 61af4bbb2a mbstowcs: Document, test, and fix null pointer dst semantics (Bug 25219) ... The function mbstowcs, by an XSI extension to POSIX, accepts a null pointer for the destination wchar_t array. This API behaviour allows you to use the function to compute the length of the required wchar_t array i.e. does the conversion without storing it and returns the number of wide characters required. We remove the __write_only__ markup for the first argument because it is not true since the destination may be a null pointer, and so the length argument may not apply. We remove the markup otherwise the new test case cannot be compiled with -Werror=nonnull. We add a new test case for mbstowcs which exercises the destination is a null pointer behaviour which we have now explicitly documented. The mbsrtowcs and mbsnrtowcs behave similarly, and mbsrtowcs is documented as doing this in C11, even if the standard doesn't come out and call out this specific use case. We add one note to each of mbsrtowcs and mbsnrtowcs to call out that they support a null pointer for the destination. The wcsrtombs function behaves similarly but in the other way around and allows you to use a null destination pointer to compute how many bytes you would need to convert the wide character input. We document this particular case also, but leave wcsnrtombs as a references to wcsrtombs, so the reader must still read the details of the semantics for wcsrtombs.		2020-06-01 12:26:32 -04:00
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bits	Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI	2020-04-30 08:52:08 -05:00
btowc.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
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Depend	Update.	2000-09-06 22:15:07 +00:00
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Makefile	mbstowcs: Document, test, and fix null pointer dst semantics (Bug 25219)	2020-06-01 12:26:32 -04:00
mbrlen.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
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test-wcschr.c	Add wcschr test cases	2011-10-23 14:14:26 -04:00
test-wcschrnul.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
test-wcscmp.c	Move wide char tests to wcsmbs directory	2011-09-08 18:01:07 -04:00
test-wcscpy.c	Add tests for wcsrchr and wcscpy	2011-12-17 14:14:58 -05:00
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test-wcslen.c	Add wcslen test cases	2011-10-23 14:11:50 -04:00
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test-wcsrchr.c	Add tests for wcsrchr and wcscpy	2011-12-17 14:14:58 -05:00
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test-wmemchr.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
test-wmemcmp.c	Move wide char tests to wcsmbs directory	2011-09-08 18:01:07 -04:00
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tst-fgetwc-after-eof.c	[BZ 1190] Make EOF sticky in stdio.	2018-03-13 08:31:56 -04:00
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tst-mbstowcs.c	mbstowcs: Document, test, and fix null pointer dst semantics (Bug 25219)	2020-06-01 12:26:32 -04:00
tst-wchar-h.c	Update wcsmbs tests to use the support test driver	2017-04-04 18:05:20 -03:00
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Versions	Add _Float32 function aliases.	2017-12-07 00:48:31 +00:00
wchar.h	Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI	2020-04-30 08:52:08 -05:00
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wcsatcliff.c	Fix handling of tail bytes of buffer in SSE2/SSSE3 x86-64 version strn{,case}cmp	2010-10-03 22:10:30 -04:00
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