[Bug c++/42325] New: internal compiler error: in instantiate_decl (with checking enabled)

[zsojka at seznam dot cz]

Attached broken code causes gcc to crash after giving diagnostics.

Command line:
g++ testcase.ii (no switch is needed)

Tested versions:
trunk r155020 - crash
trunk r153685 - crash
4.4 r154975 - crash (with enabled checking)

trunk r154886 - OK (disabled checking)
4.4 r154724 - OK (disabled checking)

Output (with checking enabled):
$ /mnt/svn/gcc-4_4/binary-154975-enable-checking/bin/g++ testcase-manual.ii -o
tmp.o -c
testcase-manual.ii:2: error: ‘size_t’ has not been declared         
testcase-manual.ii:10: error: ‘iterator_traits’ is not a template   
testcase-manual.ii:16: error: ‘allocator’ is not a template         
testcase-manual.ii:17: error: expected unqualified-id before
‘namespace’                                       
testcase-manual.ii:21: error: ‘__gnu_cxx::allocator’ is not a
template

...

testcase-manual.ii:71:   instantiated from ‘int
__gnu_cxx::__gnu_cxx::__to_xstring(int (*)(_CharT*, int, const _CharT*,
__va_list_tag*), int, const _CharT*, ...) [with _String =
__gnu_cxx::std::basic_string<char, __gnu_cxx::std::char_traits<char>,
__gnu_cxx::allocator>, _CharT = char]’
testcase-manual.ii:77:   instantiated from here
testcase-manual.ii:41: internal compiler error: in instantiate_decl, at
cp/pt.c:15451
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Output (with checking disabled):
$ /mnt/svn/gcc-4_4/binary-154724/bin/g++ testcase-manual.ii -o tmp.o -c         
testcase-manual.ii:2: error: ‘size_t’ has not been declared         
testcase-manual.ii:10: error: ‘iterator_traits’ is not a template   
testcase-manual.ii:16: error: ‘allocator’ is not a template         
testcase-manual.ii:17: error: expected unqualified-id before
‘namespace’                                                         
testcase-manual.ii:21: error: ‘__gnu_cxx::allocator’ is not a
template

...

testcase-manual.ii:77:   instantiated from here
testcase-manual.ii:50: error: invalid conversion from ‘char*’ to
‘int’
testcase-manual.ii:41: confused by earlier errors, bailing out


-- 
           Summary: internal compiler error: in instantiate_decl (with
                    checking enabled)
           Product: gcc
           Version: 4.4.3
            Status: UNCONFIRMED
          Severity: minor
          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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42325