[Bug c/50009] New: [4.7 Regression] Segmentation fault in tree_nop_conversion

[d.g.gorbachev at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50009

           Summary: [4.7 Regression] Segmentation fault in
                    tree_nop_conversion
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: d.g.gorbachev@gmail.com
            Target: i686-pc-mingw32


Created attachment 24937
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24937
Backtrace

Testcase:

struct S {
  short a;
  short b[];
} __attribute__((packed));