From 2072f5c34ede81dde9e0d953d57a0690a66b0f12 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Thu, 16 Mar 2017 13:31:57 +0000 Subject: 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 , 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. --- signal/signal.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'signal') 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. */ -- cgit 1.4.1