http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58034
Bug ID: 58034
Summary: glibc nptl/tst-cleanup2 fail due to scheduling
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: amodra at gmail dot com
Created attachment 30575
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30575&action=edit
preprocessed test case
nprl/tst-cleanup2 fails when compiled with -O2 -mcpu=power6 due to sched1
moving an assignment to a REG over code that traps.
The relevant test case source:
if (setjmp (jmpbuf))
{
puts ("Exiting main...");
return 0;
}
sprintf (p, "This should segv\n");
return 1;
}
The sprintf is optimised to three loads and stores. The problem occurs due to
the assignment of 1 to the REG holding the function return value being
scheduled before the sprintf expansion.
