[Bug c++/43076] New: ICE: SIGSEGV with invalid C++ code after giving diagnostics

[zsojka at seznam dot cz]

Command line:
g++ testcase.cpp

------- testcase.cpp -------
struct S;
template < typename > struct T
{
  template < typename >
  template < bool > struct T < S >
  {
    void f () {
----------------------------

Tested revisions:
trunk r156745 - crash
trunk r153685 - crash
4.4 r156256 - crash
4.4 r155365 - crash

==9549== Memcheck, a memory error detector                                      
==9549== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.        
==9549== Using Valgrind-3.5.0 and LibVEX; rerun with -h for copyright info      
==9549== Command:
/mnt/svn/gcc-trunk/binary-156745-lto/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/cc1plus
-quiet -D_GNU_SOURCE testcase.cpp -quiet -dumpbase testcase.cpp -mtune=generic
-auxbase testcase -o /tmp/cczcVQ4e.s                                            
==9549==
testcase.cpp:5:28: error: specialization of 'template<class> struct T' must
appear at namespace scope
testcase.cpp:5:28: error: template parameters not used in partial
specialization:
testcase.cpp:5:28: error:         '<anonymous>'
testcase.cpp:7:15: error: expected '}' at end of input
testcase.cpp:7:15: error: expected unqualified-id at end of input
testcase.cpp:7:15: error: expected '}' at end of input
==9549== Invalid read of size 2
==9549==    at 0x4F146F: push_template_decl_real (pt.c:4482)
==9549==    by 0x4CF96F: start_preparsed_function (decl.c:11778)
==9549==    by 0x566DD1: cp_parser_type_specifier (parser.c:19210)
==9549==    by 0x572D61: cp_parser_decl_specifier_seq (parser.c:9214)
==9549==    by 0x57C5AD: cp_parser_single_declaration (parser.c:18824)
==9549==    by 0x57CB72: cp_parser_template_declaration_after_export
(parser.c:18735)
==9549==    by 0x5824B9: cp_parser_declaration (parser.c:8702)
==9549==    by 0x581DC9: cp_parser_declaration_seq_opt (parser.c:8633)
==9549==    by 0x5830C4: c_parse_file (parser.c:3090)
==9549==    by 0x64ACDE: c_common_parse_file (c-opts.c:1279)
==9549==    by 0x8F664B: toplev_main (toplev.c:1053)
==9549==    by 0x658EBBC: (below main) (in /lib64/libc-2.11.so)
==9549==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==9549==
testcase.cpp:7:15: 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.
==9549==


-- 
           Summary: ICE: SIGSEGV with invalid C++ code after giving
                    diagnostics
           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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43076