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authorJoseph Myers <joseph@codesourcery.com>2017-06-19 12:00:13 +0000
committerJoseph Myers <joseph@codesourcery.com>2017-06-19 12:00:13 +0000
commit21f8859dd08fd231198eda4095061837d527b926 (patch)
tree665630983166c66aee1242bad7c96d1b361110a3 /ChangeLog
parenta66bc30d6b19ca6c9c77c0d3750acb18c691705f (diff)
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Fix signal stack namespace (bug 21584).
In POSIX.1:2008, various signal stack symbols - sigaltstack, SS_*,
SIGSTKSZ, MINSIGSTKSZ - are all XSI-shaded.  glibc wrongly makes them
visible for non-XSI POSIX.  This patch fixes the conditionals, leaving
the symbols available for __USE_MISC as it seems likely some of them
are widely used and should be visible by default.  (Note that stack_t
is *not* XSI-shaded and so the conditionals on that are correctly
unchanged.)

Tested for x86_64.

	[BZ #21584]
	* signal/signal.h: Make includes of <bits/sigstack.h> and
	<bits/ss_flags.h> conditional on [__USE_XOPEN_EXTENDED ||
	__USE_MISC].
	(sigaltstack): Make declaration conditional on
	[__USE_XOPEN_EXTENDED || __USE_MISC].
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@@ -1,5 +1,12 @@
 2017-06-19  Joseph Myers  <joseph@codesourcery.com>
 
+	[BZ #21584]
+	* signal/signal.h: Make includes of <bits/sigstack.h> and
+	<bits/ss_flags.h> conditional on [__USE_XOPEN_EXTENDED ||
+	__USE_MISC].
+	(sigaltstack): Make declaration conditional on
+	[__USE_XOPEN_EXTENDED || __USE_MISC].
+
 	[BZ #21575]
 	* resource/bits/types/struct_rusage.h: New file.
 	* include/bits/types/struct_rusage.h: Likewise.