[Bug c/38807] New: ice: gimple check: expected gimple_assign(error_mark), have gimple_phi()

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

Seen using r143243 on Ubuntu Hardy on x86.

regehr@john-home:~/volatile/tmp121$ current-gcc -O2 small.c
small.c: In function ?foo?:
small.c:16: internal compiler error: gimple check: expected
gimple_assign(error_mark), have gimple_phi() in gimple_assign_rhs1, at
gimple.h:1729
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

regehr@john-home:~/volatile/tmp121$ cat small.c

int baz (short x)
{
  return x;
}

int g_2;
int g_10;

int bar (int p_7)
{
  if (baz (g_2 ^ p_7 ^ g_2))
    return g_10;
  return 0;
}

int foo (void)
{
  return bar (g_2 == 0 || 1 == 1 - g_2) ? 1 : bar (1 && g_2);
}

regehr@john-home:~/volatile/tmp121$ current-gcc -v

Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../configure --program-prefix=current-
--enable-languages=c,c++ --prefix=/home/regehr : (reconfigured) ../configure
--program-prefix=current- --enable-languages=c,c++ --prefix=/home/regehr :
(reconfigured) ../configure --program-prefix=current- --enable-languages=c,c++
--prefix=/home/regehr : (reconfigured) ../configure --program-prefix=current-
--prefix=/home/regehr --enable-languages=c,c++ --no-create --no-recursion :
(reconfigured) ../configure --program-prefix=current- --prefix=/home/regehr
--enable-languages=c,c++ --no-create --no-recursion : (reconfigured)
../configure --program-prefix=current- --prefix=/home/regehr
--enable-languages=c,c++ --no-create --no-recursion : (reconfigured)
../configure --program-prefix=current- --prefix=/home/regehr
--enable-languages=c,c++ --no-create --no-recursion : (reconfigured)
../configure --program-prefix=current- --prefix=/home/regehr
--enable-languages=c,c++ --no-create --no-recursion
Thread model: posix
gcc version 4.4.0 20090110 (experimental) (GCC)


-- 
           Summary: ice: gimple check: expected gimple_assign(error_mark),
                    have gimple_phi()
           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: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38807