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Subject: [Bug debug/48343] [4.6/4.7 Regression] ICE compiling i586 linux-2.6.38/drivers/staging/wlan-ng/p80211wep.c: in form_sum, at reload.c:5338
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48343

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-30 13:46:26 UTC ---
Slightly more reduced testcase (and without uninitialized vars):
void foo (unsigned char *, unsigned char *);

void
test (unsigned int x, int y)
{
  unsigned int i, j = 0, k;
  unsigned char s[256], t[64];
  foo (s, t);
  t[0] = y;
  for (i = 0; i < 256; i++)
    {
      j = (j + s[i] + t[i % x]) & 0xff;
      k = i; i = j; j = k;
    }
}

again, ICEs with -O3 -m32 -g, doesn't with -O3 -m32 -g
-fno-var-tracking-assignments.