[Bug c/97955] New: [11 Regression] ICE in build_array_type_1, at tree.c:8264

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97955

            Bug ID: 97955
           Summary: [11 Regression] ICE in build_array_type_1, at
                    tree.c:8264
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Changed between 20200823 and 20201004 :


$ cat z1.c
void f (int n, int a[n]);
void f (int *b) {}


$ gcc-11-20201122 -c z1.c
z1.c:2:1: internal compiler error: Segmentation fault
    2 | void f (int *b) {}
      | ^~~~
0xb42eff crash_signal
        ../../gcc/toplev.c:330
0xdbbf5d build_array_type_1
        ../../gcc/tree.c:8264
0x62930b attr_access::array_as_string[abi:cxx11](tree_node*) const
        ../../gcc/attribs.c:2299
0x6ff9cd warn_parm_array_mismatch(unsigned int, tree_node*, tree_node*)
        ../../gcc/c-family/c-warn.c:3435
0x6421a4 start_function(c_declspecs*, c_declarator*, tree_node*)
        ../../gcc/c/c-decl.c:9591
0x689236 c_parser_declaration_or_fndef
        ../../gcc/c/c-parser.c:2444
0x690a47 c_parser_external_declaration
        ../../gcc/c/c-parser.c:1777
0x691569 c_parser_translation_unit
        ../../gcc/c/c-parser.c:1650
0x691569 c_parse_file()
        ../../gcc/c/c-parser.c:21882
0x6e0772 c_common_parse_file()
        ../../gcc/c-family/c-opts.c:1198