[Bug c/33316] New: [4.2.1 regression] ICE on valid variable-length automatic array in const struct

["radford at blackbean dot org" <gcc-bugzilla at gcc dot gnu dot org>]

The following gives an ICE when compiled with -g.  Removing -g, removing the
const or making data[] a constant size will allow it to be compiled.

int f(void *p, int length)
{
  const struct {
    int data[length];
  } *array = p;
  return array[0].data[0];
}

$ gcc -g -c t.c
t.c: In function ?f?:
t.c:8: internal compiler error: Segmentation fault

$ gcc -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ./configure --enable-languages=c
Thread model: posix
gcc version 4.2.1


-- 
           Summary: [4.2.1 regression] ICE on valid variable-length
                    automatic array in const struct
           Product: gcc
           Version: 4.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: radford at blackbean dot org
 GCC build triplet: x86_64-linux-gnu
  GCC host triplet: x86_64-linux-gnu
GCC target triplet: x86_64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33316