[Bug libc/11332] New: Incorrect unwind info in sysdeps/i386/i686/multiarch/strcmp-sse4.S

["hjl dot tools at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

On Intel Core i7, I got

(gdb) b strcmp-sse4.S:257
Breakpoint 1 at 0x805b020: file ../sysdeps/i386/i686/multiarch/strcmp-sse4.S,
line 257.
(gdb) r
Starting program: /export/gnu/import/svn/libia/string-memory/trunk/strcmp/static 
                       	i686_strcmp_2_11	ssse3_strcmp_new	ssse3_strcmp_latest
sse4_strcmp_nhm	sse4_strcmp_nhm_new	strcmp

Breakpoint 1, __strcmp_sse4_2 ()
    at ../sysdeps/i386/i686/multiarch/strcmp-sse4.S:257
257		xorl	%eax, %eax
(gdb) bt
#0  __strcmp_sse4_2 () at ../sysdeps/i386/i686/multiarch/strcmp-sse4.S:257
#1  0xa4d3ef20 in ?? ()
#2  0x000443a5 in ?? ()
#3  0xa4d3ef58 in ?? ()
#4  0x08075370 in ?? ()
#5  0x080d5200 in ?? ()
#6  0x000443a5 in ?? ()
#7  0xffffd000 in ?? ()
#8  0x00000000 in ?? ()
(gdb) 

With patch at

http://sourceware.org/ml/libc-alpha/2010-02/msg00058.html

I got,

(gdb) b strcmp-sse4.S:259
Breakpoint 1 at 0x805b020: file ../sysdeps/i386/i686/multiarch/strcmp-sse4.S,
line 259.
(gdb) r
Starting program: /export/gnu/import/svn/libia/string-memory/trunk/strcmp/static 
                       	i686_strcmp_2_11	ssse3_strcmp_new	ssse3_strcmp_latest
sse4_strcmp_nhm	sse4_strcmp_nhm_new	strcmp

Breakpoint 1, __strcmp_sse4_2 ()
    at ../sysdeps/i386/i686/multiarch/strcmp-sse4.S:259
259		xorl	%eax, %eax
(gdb) bt
#0  __strcmp_sse4_2 () at ../sysdeps/i386/i686/multiarch/strcmp-sse4.S:259
#1  0x0804b681 in do_one_test (impl=0x80d589c, s1=0xf7ffbffc "\001", 
    s2=0xf7ff8ffc "\001", len=1, exp_result=0) at test-strcmp.c:77
#2  0x0804bd3c in do_test (align1=1, align2=1, len=1, max_char=127, 
    lresidual=0, exp_result=0, page_start=0) at test-strcmp.c:257
#3  0x0804c8c9 in main (argc=1, argv=0xffffd154) at test-strcmp.c:538
(gdb)

-- 
           Summary: Incorrect unwind info in
                    sysdeps/i386/i686/multiarch/strcmp-sse4.S
           Product: glibc
           Version: 2.12
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: hjl dot tools at gmail dot com
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=11332

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