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nptl: Document crash due to incorrect use of locks

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Florian Weimer 2015-08-20 08:44:09 +02:00
parent 948e12a238
commit cd4e69ed3e
2 changed files with 8 additions and 1 deletions
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ChangeLog
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@ -1,3 +1,8 @@
2015-08-20 Florian Weimer <fweimer@redhat.com>
* sysdeps/x86/elide.h (ELIDE_UNLOCK): Document crash due to
incorrect use.
2015-08-19 Joseph Myers <joseph@codesourcery.com> 2015-08-19 Joseph Myers <joseph@codesourcery.com>
[BZ #18370] [BZ #18370]

4
sysdeps/x86/elide.h
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@ -93,7 +93,9 @@ elision_adapt(signed char *adapt_count, unsigned int status)
ret; \ ret; \
}) })
/* Returns true if lock defined by IS_LOCK_FREE was elided. */ /* Returns true if lock defined by IS_LOCK_FREE was elided. The call
to _xend crashes if the application incorrectly tries to unlock a
lock which has not been locked. */
#define ELIDE_UNLOCK(is_lock_free) \ #define ELIDE_UNLOCK(is_lock_free) \
({ \ ({ \