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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 /sysdeps/x86
parentd6fc3f6516cd20f195758086fbbbe3f17a8a6d95 (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 'sysdeps/x86')
-rw-r--r--sysdeps/x86/fpu/bits/mathinline.h14
1 files changed, 0 insertions, 14 deletions
diff --git a/sysdeps/x86/fpu/bits/mathinline.h b/sysdeps/x86/fpu/bits/mathinline.h
index 3cab929ff7..bcd99bdf74 100644
--- a/sysdeps/x86/fpu/bits/mathinline.h
+++ b/sysdeps/x86/fpu/bits/mathinline.h
@@ -120,7 +120,6 @@
/* The gcc, version 2.7 or below, has problems with all this inlining
code. So disable it for this version of the compiler. */
# if __GNUC_PREREQ (2, 8)
-__BEGIN_NAMESPACE_C99
/* Test for negative number. Used in the signbit() macro. */
__MATH_INLINE int
@@ -154,7 +153,6 @@ __NTH (__signbitl (long double __x))
return (__u.__i[2] & 0x8000) != 0;
}
-__END_NAMESPACE_C99
# endif
#endif
@@ -168,7 +166,6 @@ __END_NAMESPACE_C99
there's no need to define any of these inline functions. */
# ifdef __USE_ISOC99
-__BEGIN_NAMESPACE_C99
/* Round to nearest integer. */
# ifdef __SSE_MATH__
@@ -279,12 +276,10 @@ __NTH (fmin (double __x, double __y))
}
# endif
-__END_NAMESPACE_C99
# endif
# if defined __SSE4_1__ && defined __SSE2_MATH__
# if defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99
-__BEGIN_NAMESPACE_C99
/* Round to nearest integer. */
__MATH_INLINE double
@@ -336,10 +331,8 @@ __NTH (nearbyintf (float __x))
}
# endif
-__END_NAMESPACE_C99
# endif
-__BEGIN_NAMESPACE_STD
/* Smallest integral value not less than X. */
__MATH_INLINE double
__NTH (ceil (double __x))
@@ -348,9 +341,7 @@ __NTH (ceil (double __x))
__asm ("roundsd $2, %1, %0" : "=x" (__res) : "xm" (__x));
return __res;
}
-__END_NAMESPACE_STD
-__BEGIN_NAMESPACE_C99
__MATH_INLINE float
__NTH (ceilf (float __x))
{
@@ -358,9 +349,7 @@ __NTH (ceilf (float __x))
__asm ("roundss $2, %1, %0" : "=x" (__res) : "xm" (__x));
return __res;
}
-__END_NAMESPACE_C99
-__BEGIN_NAMESPACE_STD
/* Largest integer not greater than X. */
__MATH_INLINE double
__NTH (floor (double __x))
@@ -369,9 +358,7 @@ __NTH (floor (double __x))
__asm ("roundsd $1, %1, %0" : "=x" (__res) : "xm" (__x));
return __res;
}
-__END_NAMESPACE_STD
-__BEGIN_NAMESPACE_C99
__MATH_INLINE float
__NTH (floorf (float __x))
{
@@ -379,7 +366,6 @@ __NTH (floorf (float __x))
__asm ("roundss $1, %1, %0" : "=x" (__res) : "xm" (__x));
return __res;
}
-__END_NAMESPACE_C99
# endif
# endif
#endif