http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46565
Summary: [4.5/4.6 Regression] ICE: SIGSEGV in pop_tinst_level
(pt.c:7513) with -gstabs -g on invalid code
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: zso...@seznam.cz
------- testcase.C --------
template < int N > struct X {
static const int value = X < N - 1 >::value;
};
template struct X <1000>;
---------------------------
(g++.dg/template/recurse2.C)
Compiler output:
$ gcc -gstabs -g testcase.C
testcase.C:1:27: error: template instantiation depth exceeds maximum of 1024
(use -ftemplate-depth= to increase the maximum) instantiating
'X<-0x00000000000000017>::value'
testcase.C:2:41: recursively instantiated from 'const int X<999>::value'
testcase.C:2:41: instantiated from 'const int X<1000>::value'
testcase.C:4:17: instantiated from here
testcase.C:2:41: error: template instantiation depth exceeds maximum of 1024
(use -ftemplate-depth= to increase the maximum) instantiating 'struct
X<-0x00000000000000019>'
testcase.C:2:41: recursively instantiated from 'const int X<999>::value'
testcase.C:2:41: instantiated from 'const int X<1000>::value'
testcase.C:4:17: instantiated from here
testcase.C:2:41: error: incomplete type 'X<-0x00000000000000019>' used in
nested name specifier
==3448== Invalid read of size 4
==3448== at 0x518875: pop_tinst_level (pt.c:7513)
==3448== by 0x54EAF2: instantiate_decl (pt.c:17402)
==3448== by 0x550681: do_type_instantiation (pt.c:16682)
==3448== by 0x5BAB68: cp_parser_explicit_instantiation (parser.c:12269)
==3448== by 0x5BDD89: cp_parser_declaration (parser.c:9415)
==3448== by 0x5BC569: cp_parser_declaration_seq_opt (parser.c:9328)
==3448== by 0x5BE234: c_parse_file (parser.c:3445)
==3448== by 0x6922F4: c_common_parse_file (c-opts.c:1070)
==3448== by 0x9F7423: toplev_main (toplev.c:870)
==3448== by 0x6376BBC: (below main) (in /lib64/libc-2.11.2.so)
==3448== Address 0x10 is not stack'd, malloc'd or (recently) free'd
==3448==
testcase.C:4:17: 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.
Tested revisions:
r166936 - crash
4.5 r166509 - crash
4.4 r166509 - OK
