re PR middle-end/24306 (va_arg gets confused when skipping over certain zero-sized types with -msse)

2005-12-20  Richard Guenther  <rguenther@suse.de>

	PR middle-end/24306
	* builtins.c (std_gimplify_va_arg_expr): Do not align
	va frame for zero sized types.
	* config/i386/i386.c (ix86_gimplify_va_arg): Likewise.

        * gcc.target/i386/pr24306.c: New testcase.

From-SVN: r108854