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* [gcc r12-7176] libstdc++: Fix directory iterator build for newlib
@ 2022-02-10 13:02 Jonathan Wakely
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From: Jonathan Wakely @ 2022-02-10 13:02 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:3d5f4f76e6db0895181ebca538748379bfe6058f
commit r12-7176-g3d5f4f76e6db0895181ebca538748379bfe6058f
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Tue Feb 8 21:05:30 2022 +0000
libstdc++: Fix directory iterator build for newlib
When building for newlib HAVE_OPENAT and HAVE_UNLINKAT are (sometimes?)
defined, but <fcntl.h> is only included when HAVE_DIRENT_H is defined.
Since directory iterators are completely useless without <dirent.h>,
just override the HAVE_OPENAT and HAVE_UNLINKAT detection when we don't
have <dirent.h>.
libstdc++-v3/ChangeLog:
* src/filesystem/dir-common.h (_GLIBCXX_HAVE_DIRFD): Undefine
when <dirent.h> is not available.
(_GLIBCXX_HAVE_UNLINKAT): Likewise.
Diff:
---
libstdc++-v3/src/filesystem/dir-common.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libstdc++-v3/src/filesystem/dir-common.h b/libstdc++-v3/src/filesystem/dir-common.h
index 511b988f1c7..365fd527f4d 100644
--- a/libstdc++-v3/src/filesystem/dir-common.h
+++ b/libstdc++-v3/src/filesystem/dir-common.h
@@ -70,6 +70,8 @@ struct DIR { };
inline DIR* opendir(const char*) { return nullptr; }
inline dirent* readdir(DIR*) { return nullptr; }
inline int closedir(DIR*) { return -1; }
+#undef _GLIBCXX_HAVE_DIRFD
+#undef _GLIBCXX_HAVE_UNLINKAT
#endif
} // namespace __gnu_posix
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