[Bug c/79431] New: ICE in get, at cgraph.h:397

[gerhard.steinmetz.fortran@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79431

            Bug ID: 79431
           Summary: ICE in get, at cgraph.h:397
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gerhard.steinmetz.fortran@t-online.de
  Target Milestone: ---

Affects versions 6 and 7 (configured with --enable-checking=yes) :
(compiles with "static int a")


$ cat z1.c
void fn1 ()
{
  int a;
  #pragma omp declare target (a)
}


$ gcc-6 -fopenmp -c z1.c   # official release 6.3.1 20170131
$
$ gcc-7-20170205 -fopenmp -c z1.c
z1.c: In function 'fn1':
z1.c:4:11: internal compiler error: in get, at cgraph.h:397
   #pragma omp declare target (a)
           ^~~
0x6d14d9 symtab_node::get(tree_node const*)
        ../../gcc/cgraph.h:394
0x6d14d9 c_parser_omp_declare_target
        ../../gcc/c/c-parser.c:16850
0x6d14d9 c_parser_omp_declare
        ../../gcc/c/c-parser.c:17290
0x6b406b c_parser_pragma
        ../../gcc/c/c-parser.c:10313
0x6d3f0e c_parser_compound_statement_nostart
        ../../gcc/c/c-parser.c:4875
0x6d44ce c_parser_compound_statement
        ../../gcc/c/c-parser.c:4740
0x6cf90c c_parser_declaration_or_fndef
        ../../gcc/c/c-parser.c:2112
0x6d791b c_parser_external_declaration
        ../../gcc/c/c-parser.c:1468
0x6d8379 c_parser_translation_unit
        ../../gcc/c/c-parser.c:1348
0x6d8379 c_parse_file()
        ../../gcc/c/c-parser.c:18185
0x736892 c_common_parse_file()
        ../../gcc/c-family/c-opts.c:1107