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libc++: fix compiling <locale> with -fmodules

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In /usr/include/c++/v1/__locale_dir/locale_base_api.h, xlocale.h is
included without first including stdio.h and stdlib.h, which causes
functions like strtoll_l() or sscanf_l() to not be declared.

When compiling with -fmodules, locale_base_api.h is processed separately
due to a declaration in /usr/include/c++/v1/module.modulemap, and this
will cause errors due to the above undeclared symbols.

Meanwhile, upstream has substantially reorganized this part of libc++'s
headers, so apply a minimalistic workaround: specifically when compiling
with -fmodules, add includes of stdio.h and stdlib.h.

PR:		286342
MFC after:	1 week
This commit is contained in:
Jordan Gordeev 2025-05-18 21:55:05 +02:00 committed by Dimitry Andric
parent a8aaf8039f
commit c809b0184d
1 changed files with 7 additions and 1 deletions
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8
contrib/llvm-project/libcxx/include/__locale_dir/locale_base_api.h
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@ -25,7 +25,13 @@
# include <__locale_dir/locale_base_api/fuchsia.h>
#elif defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC)
# include <__locale_dir/locale_base_api/musl.h>
#elif defined(__APPLE__) || defined(__FreeBSD__)
#elif defined(__APPLE__)
# include <xlocale.h>
#elif defined(__FreeBSD__)
# if __has_feature(modules)
# include <stdio.h>
# include <stdlib.h>
# endif
# include <xlocale.h>
#endif