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Correct signatures of several pthreads stubs.

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Most important, use a correct signature for the
__pthread_cleanup_push_imp() stub, which was incorrectly generated
with two-args variant.  The pthread_cleanup_info pointer was corrupted
in the forwarded call to the real libthr implementation, visible on
PowerPC and possibly ARM. [1]

Found and tested by:	Mark Millard <markmi@dsl-only.net> [1]
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2017-07-02 05:40:22 +00:00
parent 3f7830a31e
commit c89a3f0013
1 changed files with 5 additions and 4 deletions
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9
lib/libc/gen/_pthread_stubs.c
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@ -279,10 +279,11 @@ STUB_FUNC2(pthread_kill, PJT_KILL, int, void *, int)
STUB_FUNC2(pthread_setcancelstate, PJT_SETCANCELSTATE, int, int, void *)
STUB_FUNC2(pthread_setcanceltype, PJT_SETCANCELTYPE, int, int, void *)
STUB_FUNC(pthread_testcancel, PJT_TESTCANCEL, void)
STUB_FUNC1(__pthread_cleanup_pop_imp, PJT_CLEANUP_POP_IMP, int, int)
STUB_FUNC2(__pthread_cleanup_push_imp, PJT_CLEANUP_PUSH_IMP, void, void*, void *);
STUB_FUNC1(_pthread_cancel_enter, PJT_CANCEL_ENTER, int, int)
STUB_FUNC1(_pthread_cancel_leave, PJT_CANCEL_LEAVE, int, int)
STUB_FUNC1(__pthread_cleanup_pop_imp, PJT_CLEANUP_POP_IMP, void, int)
STUB_FUNC3(__pthread_cleanup_push_imp, PJT_CLEANUP_PUSH_IMP, void, void *,
void *, void *);
STUB_FUNC1(_pthread_cancel_enter, PJT_CANCEL_ENTER, void, int)
STUB_FUNC1(_pthread_cancel_leave, PJT_CANCEL_LEAVE, void, int)
static int
stub_zero(void)