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Fix features.h for -Wundef (bug 19212).
features.h is not clean with -Wundef (for the installed header, of course this only appears with -Wsystem-headers). In ISO C standards modes, you get a series of warnings / errors relating to _POSIX_C_SOURCE and _XOPEN_SOURCE not being defined when tested in standards mode and uses #undef _GNU_SOURCE to avoid the default _GNU_SOURCE from libc-symbols.h. This patch changes the relevant #if conditionals to avoid these warnings / errors. Tested for x86_64 and x86 (testsuite, and that installed shared libraries are unchanged by the patch). [BZ #19212] * include/features.h [(_XOPEN_SOURCE - 0) >= 500]: Change conditional to [defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) >= 500]. [_POSIX_C_SOURCE >= 1]: Change conditional to [defined _POSIX_C_SOURCE && _POSIX_C_SOURCE >= 1]. [(_POSIX_C_SOURCE - 0) >= 199309L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199309L]. [(_POSIX_C_SOURCE - 0) >= 199506L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199506L]. [(_POSIX_C_SOURCE - 0) >= 200112L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200112L]. [(_POSIX_C_SOURCE - 0) >= 200809L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200809L].
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ChangeLog
15
ChangeLog
@ -1,5 +1,20 @@
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2015-11-05 Joseph Myers <joseph@codesourcery.com>
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[BZ #19212]
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* include/features.h [(_XOPEN_SOURCE - 0) >= 500]: Change
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conditional to [defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) >=
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500].
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[_POSIX_C_SOURCE >= 1]: Change conditional to [defined
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_POSIX_C_SOURCE && _POSIX_C_SOURCE >= 1].
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[(_POSIX_C_SOURCE - 0) >= 199309L]: Change conditional to [defined
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_POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199309L].
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[(_POSIX_C_SOURCE - 0) >= 199506L]: Change conditional to [defined
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_POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199506L].
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[(_POSIX_C_SOURCE - 0) >= 200112L]: Change conditional to [defined
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_POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200112L].
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[(_POSIX_C_SOURCE - 0) >= 200809L]: Change conditional to [defined
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_POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200809L].
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[BZ #19209]
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* math/bits/math-finite.h (ldexp): Remove declaration.
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(ldexpf): Likewise.
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2
NEWS
2
NEWS
@ -22,7 +22,7 @@ Version 2.23
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19003, 19007, 19012, 19016, 19018, 19032, 19046, 19048, 19049, 19050,
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19059, 19071, 19074, 19076, 19077, 19078, 19079, 19085, 19086, 19088,
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19094, 19095, 19124, 19125, 19129, 19134, 19137, 19156, 19174, 19181,
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19189, 19201, 19205, 19209.
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19189, 19201, 19205, 19209, 19212.
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* A defect in the malloc implementation, present since glibc 2.15 (2012) or
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glibc 2.10 via --enable-experimental-malloc (2009), could result in the
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@ -224,8 +224,9 @@
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# undef _POSIX_C_SOURCE
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# define _POSIX_C_SOURCE 200809L
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#endif
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#if ((!defined __STRICT_ANSI__ || (_XOPEN_SOURCE - 0) >= 500) && \
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!defined _POSIX_SOURCE && !defined _POSIX_C_SOURCE)
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#if ((!defined __STRICT_ANSI__ \
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|| (defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) >= 500)) \
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&& !defined _POSIX_SOURCE && !defined _POSIX_C_SOURCE)
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# define _POSIX_SOURCE 1
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# if defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) < 500
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# define _POSIX_C_SOURCE 2
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@ -239,7 +240,9 @@
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# define __USE_POSIX_IMPLICITLY 1
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#endif
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#if defined _POSIX_SOURCE || _POSIX_C_SOURCE >= 1 || defined _XOPEN_SOURCE
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#if (defined _POSIX_SOURCE \
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|| (defined _POSIX_C_SOURCE && _POSIX_C_SOURCE >= 1) \
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|| defined _XOPEN_SOURCE)
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# define __USE_POSIX 1
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#endif
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@ -247,15 +250,15 @@
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# define __USE_POSIX2 1
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#endif
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#if (_POSIX_C_SOURCE - 0) >= 199309L
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#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199309L
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# define __USE_POSIX199309 1
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#endif
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#if (_POSIX_C_SOURCE - 0) >= 199506L
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#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199506L
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# define __USE_POSIX199506 1
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#endif
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#if (_POSIX_C_SOURCE - 0) >= 200112L
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#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200112L
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# define __USE_XOPEN2K 1
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# undef __USE_ISOC95
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# define __USE_ISOC95 1
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@ -263,7 +266,7 @@
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# define __USE_ISOC99 1
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#endif
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#if (_POSIX_C_SOURCE - 0) >= 200809L
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#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200809L
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# define __USE_XOPEN2K8 1
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# undef _ATFILE_SOURCE
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# define _ATFILE_SOURCE 1
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