[Bug libc/12205] Bad x86-64 strncasecmp on Intel Core i7

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12205

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2010-11-10 00:05:34 UTC ---
[hjl@gnu-35 junk-1]$ cat test.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

static char cp [4096+16] __attribute__ ((aligned(4096)));
static char gotrel[4096] __attribute__ ((aligned(4096)));

int
main ()
{
  char *p = cp + 0xffa;
  char *g = gotrel + 0xcbe;
  strcpy (p, "gottpoff");
  strcpy (g, "GOTPLT");
  printf ("%p: %s\n", p, p);
  printf ("%p: %s\n", g, g);
  if (strncasecmp (p, g, 6) <= 0)
    abort ();
  return 0;
}
[hjl@gnu-35 junk-1]$ make
cc     test.c   -o test
./test
0x602ffa: gottpoff
0x604cbe: GOTPLT
make: *** [all] Aborted
[hjl@gnu-35 junk-1]$

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