[Bug c/45512] New: null pointer dereference in gcc

["regehr at cs dot utah dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

[regehr@gamow tmp426]$ current-gcc -v

Using built-in specs.
COLLECT_GCC=current-gcc
COLLECT_LTO_WRAPPER=/uusoc/exports/scratch/regehr/z/compiler-install/gcc-r163740-install/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.6.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --with-libelf=/usr/local --enable-lto
--prefix=/home/regehr/z/compiler-install/gcc-r163740-install
--program-prefix=r163740- --enable-languages=c,c++
Thread model: posix
gcc version 4.6.0 20100901 (experimental) (GCC) 

[regehr@gamow tmp426]$ cat small.c

int g_9;
int *g_8 = &g_9;
int g_56;
int *g_209 = &g_56;

int func_103 (int p_104)
{
  if (1 != *g_8)
    {
      unsigned char l_107[3];
      g_56 &= l_107[2];
    }
  else
    for (0; g_56; 0)
      &p_104;
  return p_104;
}

void func_85 (int,int);

void int320 (int * p_51, int p_52, unsigned p_53)
{
  int l;
  func_85 (func_103 (0), *g_209);
  l = func_103 (0);
}

[regehr@gamow tmp426]$ current-gcc -O2 small.c

small.c: In function 'func_103':
small.c:6:5: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 
           Summary: null pointer dereference in gcc
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: regehr at cs dot utah dot edu
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45512