[Bug middle-end/19687] New: [4.0 Regression] ICE with union initializer

["belyshev at depni dot sinp dot msu dot ru" <gcc-bugzilla at gcc dot gnu dot org>]

Compile this with "-O0 -march=i386" to get segmenation fault:
------------------------------------------------------------------------------
typedef union
{
  int i, j[4];
} foo;

void bar ()
{
  foo t = {};
}
------------------------------------------------------------------------------
Caused by this patch:

2005-01-26  Richard Henderson  <rth@redhat.com>

	PR middle-end/19515
	* expr.c (categorize_ctor_elements): New argument p_must_clear.
	(categorize_ctor_elements_1): Likewise.  Detect a union that isn't
	fully initialized.
	(mostly_zeros_p): Update for new categorize_ctor_elements argument.
	* gimplify.c (gimplify_init_constructor): Likewise.  Only shove
	objects into static storage if they have more than one non-zero value.
	* tree.h (categorize_ctor_elements): Update decl.

-- 
           Summary: [4.0 Regression] ICE with union initializer
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: critical
          Priority: P1
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: belyshev at depni dot sinp dot msu dot ru
                CC: gcc-bugs at gcc dot gnu dot org,rth at gcc dot gnu dot
                    org
GCC target triplet: i386-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19687