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authorJoseph Myers <joseph@codesourcery.com>2017-03-16 13:31:57 +0000
committerJoseph Myers <joseph@codesourcery.com>2017-03-16 13:31:57 +0000
commit2072f5c34ede81dde9e0d953d57a0690a66b0f12 (patch)
tree0833e169e1c3e9b24ef64e9010f7bb1e862f7da8 /signal
parentAdd ChangeLog entry for aarch64 ifunc support patch. (diff)
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Remove C++ namespace handling from glibc headers.
glibc headers include some code (not particularly consistent or systematic) to put various declarations in C++ namespaces std and __c99, if _GLIBCPP_USE_NAMESPACES is defined. As noted in <https://gcc.gnu.org/ml/libstdc++/2017-03/msg00025.html>, this macro was removed from libstdc++ in 2000. I don't expect compilation with such old versions of libstdc++ to work with current glibc headers anyway (whereas old *binaries* are expected to stay working with current glibc); this patch (which should be a no-op with any libstdc++ version postdating that removal) removes all this code from the glibc headers. The begin-end-check.pl test, whose comments say it is about checking these namespace macro calls, is also removed. The code in that test would have covered __BEGIN_DECLS / __END_DECLS as well, but if those weren't properly matched it would show up with the check-installed-headers-cxx tests, so I don't think there is an actual use for keeping begin-end-check.pl with the namespace code removed. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * misc/sys/cdefs.h (__BEGIN_NAMESPACE_STD): Remove macro. (__END_NAMESPACE_STD): Likewise. (__USING_NAMESPACE_STD): Likewise. (__BEGIN_NAMESPACE_C99): Likewise. (__END_NAMESPACE_C99): Likewise. (__USING_NAMESPACE_C99): Likewise. * math/math.h (_Mdouble_BEGIN_NAMESPACE): Do not define and undefine macro. (_Mdouble_END_NAMESPACE): Likewise. * ctype/ctype.h: Do not handle C++ namespaces. * libio/bits/stdio-ldbl.h: Likewise. * libio/stdio.h: Likewise. * locale/locale.h: Likewise. * math/bits/mathcalls.h: Likewise. * setjmp/setjmp.h: Likewise. * signal/signal.h: Likewise. * stdlib/bits/stdlib-float.h: Likewise. * stdlib/bits/stdlib-ldbl.h: Likewise. * stdlib/stdlib.h: Likewise. * string/string.h: Likewise. * sysdeps/x86/fpu/bits/mathinline.h: Likewise. * time/bits/types/clock_t.h: Likewise. * time/bits/types/struct_tm.h: Likewise. * time/bits/types/time_t.h: Likewise. * time/time.h: Likewise. * wcsmbs/bits/wchar-ldbl.h: Likewise. * wcsmbs/uchar.h: Likewise. * wcsmbs/wchar.h: Likewise. [_GLIBCPP_USE_NAMESPACES] (wint_t): Remove conditional definition. * wctype/wctype.h: Do not handle C++ namespaces. * scripts/begin-end-check.pl: Remove. * Makefile (installed-headers): Likewise. (tests-special): Do not add $(objpfx)begin-end-check.out. ($(objpfx)begin-end-check.out): Remove.
Diffstat (limited to 'signal')
-rw-r--r--signal/signal.h6
1 files changed, 0 insertions, 6 deletions
diff --git a/signal/signal.h b/signal/signal.h
index 2c7f9e1043..84f2a1f11e 100644
--- a/signal/signal.h
+++ b/signal/signal.h
@@ -36,9 +36,7 @@ __BEGIN_DECLS
#if defined __need_sig_atomic_t || defined _SIGNAL_H
# ifndef __sig_atomic_t_defined
# define __sig_atomic_t_defined
-__BEGIN_NAMESPACE_STD
typedef __sig_atomic_t sig_atomic_t;
-__END_NAMESPACE_STD
# endif
# undef __need_sig_atomic_t
#endif
@@ -96,7 +94,6 @@ extern __sighandler_t sysv_signal (int __sig, __sighandler_t __handler)
/* Set the handler for the signal SIG to HANDLER, returning the old
handler, or SIG_ERR on error.
By default `signal' has the BSD semantic. */
-__BEGIN_NAMESPACE_STD
#ifdef __USE_MISC
extern __sighandler_t signal (int __sig, __sighandler_t __handler)
__THROW;
@@ -110,7 +107,6 @@ extern __sighandler_t __REDIRECT_NTH (signal,
# define signal __sysv_signal
# endif
#endif
-__END_NAMESPACE_STD
#ifdef __USE_XOPEN
/* The X/Open definition of `signal' conflicts with the BSD version.
@@ -133,10 +129,8 @@ extern int kill (__pid_t __pid, int __sig) __THROW;
extern int killpg (__pid_t __pgrp, int __sig) __THROW;
#endif /* Use misc || X/Open Unix. */
-__BEGIN_NAMESPACE_STD
/* Raise signal SIG, i.e., send SIG to yourself. */
extern int raise (int __sig) __THROW;
-__END_NAMESPACE_STD
#ifdef __USE_MISC
/* SVID names for the same things. */