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| author | Bruno Haible <bruno@clisp.org> | 2023-04-19 17:59:03 +0200 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2023-04-19 17:59:03 +0200 |
| commit | ccb59e4c36bea4915303a24ea1c7dec109db97eb (patch) | |
| tree | 30eb5e84cca4b21d1a18982cd5676fe80aaed08e /doc | |
| parent | 9bf6bcc74b4caf4d74bab8d98a4e00f761f2e5ca (diff) | |
| download | gnulib-ccb59e4c36bea4915303a24ea1c7dec109db97eb.tar.gz | |
wcsncmp: Work around two ISO C compliance bugs on several platforms.
* lib/wchar.in.h (wcsncmp): Consider REPLACE_WCSNCMP.
* lib/wcsncmp-impl.h (wcsncmp): Don't assume that the two wide
characters are in the range 0..INT_MAX.
* m4/wcsncmp.m4 (gl_FUNC_WCSNCMP): Test whether wcsncmp works for all
wide characters. Set REPLACE_WCSNCMP.
* m4/wchar_h.m4 (gl_WCHAR_H_DEFAULTS): Initialize REPLACE_WCSNCMP.
* modules/wchar (Makefile.am): Substitute REPLACE_WCSNCMP.
* modules/wcsncmp (Status, Notice): Un-obsolete this module.
(configure.ac): Consider REPLACE_WCSNCMP.
* doc/posix-functions/wcsncmp.texi: Mention the two bugs.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/posix-functions/wcsncmp.texi | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/posix-functions/wcsncmp.texi b/doc/posix-functions/wcsncmp.texi index b6282606ed..46874af46f 100644 --- a/doc/posix-functions/wcsncmp.texi +++ b/doc/posix-functions/wcsncmp.texi @@ -8,6 +8,14 @@ Gnulib module: wcsncmp Portability problems fixed by Gnulib: @itemize +@item +This function compares the wide characters as if they were unsigned, although +@code{wchar_t} is signed, on some platforms: +glibc 2.14.1 on x86 or x86_64, musl libc 1.2.3, macOS 12.5, FreeBSD 13.2, NetBSD 9.0, OpenBSD 7.2, Solaris 11.4. +@item +This function may return a wrong result if the two arguments are of different +length, on some platforms: +AIX 7.2 in 64-bit mode. @end itemize Portability problems not fixed by Gnulib: |