Bug 5465 - glibc-2.7 uses vdso symbol in pthread_cond_timedwait when !SHARED

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Bugzilla Bug 5465

glibc-2.7 uses vdso symbol in pthread_cond_timedwait when !SHARED

Last modified: 2007-12-12 08:07:52

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5465 alias:

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Reporter:

Mike Frysinger <vapier@gentoo.org>

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Status:

RESOLVED

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Resolution:

FIXED

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Assigned To:

Ulrich Drepper <drepper@redhat.com>

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Flags:			Requestee:
	backport		()
	examined		()
	testsuite		()

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Attachment	Description	Type	Created	Actions
glibc-libpthread-x86-64-vdso-SHARED.patch	glibc-libpthread-x86-64-vdso-SHARED.patch	patch	2007-12-10 01:32	Edit \| Diff
Create a New Attachment (proposed patch, testcase, etc.)			View All

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Leave as RESOLVED FIXED
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Description:

Last confirmed: 0000-00-00 00:00

Opened: 2007-12-10 01:31

nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S was updated to call
clock_gettime via the VDSO if possible, but that vdso symbol is only provided
for SHARED code (see libc/sysdeps/unix/sysv/linux/x86_64/init-first.c).  thus,
linking against libpthread.a and using pthread_cond_timedwait() on x86_64 will
cause a link failure (undefined __vdso_clock_gettime symbol).

the attached patch by Michal Januszewski will only use the vdso symbol when
SHARED is defined.

------- Additional Comment #1 From Mike Frysinger 2007-12-10 01:32 -------

Created an attachment (id=2131)
glibc-libpthread-x86-64-vdso-SHARED.patch

------- Additional Comment #2 From Ulrich Drepper 2007-12-12 08:07 -------

Patch is in cvs.

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