http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49503
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2011-06-22 18:34:32 UTC --- (In reply to comment #2) > (In reply to comment #1) > > (In reply to comment #0) > > > > > > As _L_mutex_lock is a function, GCC generates a prologue and epilogue for > > > it - > > > in prologue stack alignment is performed (according to ABI64, stack > > > should be > > > aligned to 128-bit). > > > > I didn't see any prologue and epilogue for _L_mutex_lock. Do you have > > a run-time testcase to show the problem? > > I don't have run-time test for this fail, but here is a way to see the > problem: > It is very easy to check if stack alignment is correct at run-time. Please see how it is done in testcases under gcc.dg/torture/stackalign.
