[Bug c/70852] New: ice in warn_for_memset

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70852

            Bug ID: 70852
           Summary: ice in warn_for_memset
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

Created attachment 38366
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38366&action=edit
C source code

The attached C code, when compiled by gcc trunk dated 20160428, does this

/home/dcb/rpmbuild/BUILD/allegro-4.4.2/addons/jpgalleg/src/decode.c:1054:2:
internal compiler error: Segmentation fault
  memset(_jpeg_huffman_dc_table, 0, 4 * sizeof(HUFFMAN_TABLE));
  ^~~~~~
0xc438df crash_signal
        ../../src/trunk/gcc/toplev.c:333
0x6ed3da tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
        ../../src/trunk/gcc/tree.h:3147
0x6ed3da warn_for_memset(unsigned int, tree_node*, tree_node*, int)
        ../../src/trunk/gcc/c-family/c-common.c:11800
0x69cc49 c_parser_postfix_expression_after_primary
        ../../src/trunk/gcc/c/c-parser.c:8301