other/7814: incorrect scheduling for glibc-2.2.92 stpcpy test
glen@imodulo.com
glen@imodulo.com
Mon Sep 2 12:26:00 GMT 2002
>Number: 7814
>Category: other
>Synopsis: incorrect scheduling for glibc-2.2.92 stpcpy test
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: wrong-code
>Submitter-Id: net
>Arrival-Date: Mon Sep 02 12:26:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: glibc-2.2.92 testsuite
>Release: gcc 3.2
>Organization:
>Environment:
i586-pc-linux-gnu
>Description:
GCC incorrectly generates scheduling dependencies...
test_stpcpy:
pushl %ebp
movl %esp, %ebp
pushl %edi
pushl %esi
movl $1, %esi
pushl %ebx
movl $one, %ebx
subl %ebx, %esi
subl $20, %esp
movl $.LC2, it
leal (%ebx,%esi), %edi
pushl $1
cmpl $1, %edi
addl $one+2, %esi << incorrectly clobbers CC
sete %al
andl $255, %eax
pushl %eax
movw $97, one
call check
addl $12, %esp
>How-To-Repeat:
bash:~# gcc -O2 -mcpu=i586 stpcpy.i
bash:~# ./a.out
stpcpy flunked test 1
1 errors.
>Fix:
I'm testing a patch to sched-deps.c which I'll post soon.
>Release-Note:
>Audit-Trail:
>Unformatted:
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