[Bug c++/43109] New: ICE: SIGSEGV with unnamed namespace inside named

[zsojka at seznam dot cz]

Command line:
g++ testcase.C

--------- testcase.C ---------
namespace std {
 namespace {
   struct S {};
 }
}
------------------------------

Tested revisions:
r156830 - crash
r156515 - crash
r156367 - crash
r156293 - OK
r153685 - OK
4.4 r156256 - OK

Valgrind output:
==12612== Command:
/mnt/svn/gcc-trunk/binary-156830-lto/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/cc1plus
-quiet -D_GNU_SOURCE testcase.C -quiet -dumpbase testcase.C -mtune=generic
-auxbase testcase -o /tmp/cckpV07O.s
==12612==
==12612== Invalid read of size 2
==12612==    at 0x5C2192: begin_class_definition (semantics.c:2381)
==12612==    by 0x565F57: cp_parser_type_specifier (parser.c:15874)
==12612==    by 0x572ED1: cp_parser_decl_specifier_seq (parser.c:9214)
==12612==    by 0x562D4A: cp_parser_simple_declaration (parser.c:8876)
==12612==    by 0x57A076: cp_parser_block_declaration (parser.c:8837)
==12612==    by 0x5824C9: cp_parser_declaration (parser.c:8742)
==12612==    by 0x581F39: cp_parser_declaration_seq_opt (parser.c:8633)
==12612==    by 0x58215F: cp_parser_namespace_definition (parser.c:12933)
==12612==    by 0x582597: cp_parser_declaration (parser.c:8734)
==12612==    by 0x581F39: cp_parser_declaration_seq_opt (parser.c:8633)
==12612==    by 0x58215F: cp_parser_namespace_definition (parser.c:12933)
==12612==    by 0x582597: cp_parser_declaration (parser.c:8734)
==12612==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==12612==
testcase.C:3:13: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 
           Summary: ICE: SIGSEGV with unnamed namespace inside named
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: zsojka at seznam dot cz
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43109