[Bug c/34010] New: ppc64 bad stdargs codegen for zero sized objects

[mrs at apple dot com]

The fix for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24306 breaks -m64
struct-layout-1.c.

It breaks the abi of every target, which is wrong.  On ppc -m64, it results in
a self inconsistent abi.

This correct fix would be to modify ix86_function_arg_boundary function to give
PARM_BOUNDARY for zero sized objects.


-- 
           Summary: ppc64 bad stdargs codegen for zero sized objects
           Product: gcc
           Version: 4.2.1
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mrs at apple dot com
GCC target triplet: powerpc-apple-darwin9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34010