[Bug c++/46277] [4.6 Regression] Revision 166167 failed to build 252.eon in SPEC CPU 2000

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46277

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2010-11-02 21:07:44 UTC ---
Created attachment 22241
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22241
A testcase

This isn't the correct C++ code. But the crash is similar:

(gdb) r  -fpreprocessed pr46277.ii -quiet -dumpbase pr46277.ii -mtune=generic
-arch=x86-64 -auxbase pr46277 -O2 -version -o pr46277.s
Starting program:
/export/gnu/import/rrs/166167/usr/libexec/gcc/x86_64-unknown-linux-gnu/4.6.0/cc1plus
-fpreprocessed pr46277.ii -quiet -dumpbase pr46277.ii -mtune=generic
-march=x86-64 -auxbase pr46277 -O2 -version -o pr46277.s
GNU C++ (GCC) version 4.6.0 20101102 (experimental) [trunk revision 166167]
(x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.4.4 20100630 (Red Hat 4.4.4-10), GMP version
4.3.2, MPFR version 2.4.2-p3, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C++ (GCC) version 4.6.0 20101102 (experimental) [trunk revision 166167]
(x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.4.4 20100630 (Red Hat 4.4.4-10), GMP version
4.3.2, MPFR version 2.4.2-p3, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 76aad85e17351790718ddccb4a2aa193
pr46277.ii:1:50: error: expected type-specifier before âchar_traitsâ
pr46277.ii:1:50: error: expected â>â before âchar_traitsâ
pr46277.ii:2:32: error: template argument 2 is invalid
pr46277.ii:2:42: error: invalid type in declaration before â;â token
pr46277.ii:4:84: error: âggRGBETypeâ does not name a type
pr46277.ii:4:268: error: âggRGBETypeâ has not been declared
pr46277.ii:4:817: error: âggRGBETypeâ does not name a type
pr46277.ii: In member function âvoid ggRGBE::ShiftExponent(int)â:
pr46277.ii:4:327: error: âdataâ was not declared in this scope
pr46277.ii: At global scope:
pr46277.ii:6:41: error: âggRasterâ has not been declared
pr46277.ii:6:49: error: expected â,â or â...â before â<â token
pr46277.ii:8:35: error: expected constructor, destructor, or type conversion
before â(â token
pr46277.ii:10:64: error: âggRasterâ has not been declared
pr46277.ii:10:72: error: expected â,â or â...â before â<â token
pr46277.ii: In member function âggBoolean ggIO<T>::readbody(ifstream*, int)â:
pr46277.ii:11:16: error: âtypeâ was not declared in this scope
pr46277.ii:11:38: error: âGGPPMâ was not declared in this scope
pr46277.ii:11:45: error: âcountâ was not declared in this scope
pr46277.ii:11:66: error: âGGGEâ was not declared in this scope
pr46277.ii:11:85: error: âscanlineâ was not declared in this scope
pr46277.ii:11:107: error: âwidthâ was not declared in this scope

Program received signal SIGSEGV, Segmentation fault.
0x00000000006ae43d in expand_default_init (binfo=0x7ffff1952000, 
    true_exp=0x7ffff195f150, exp=0x7ffff195f150, init=0x0, flags=3, complain=3)
    at ../../src/gcc/cp/init.c:1446
1446          if (DECL_DECLARED_CONSTEXPR_P (fn))
Missing separate debuginfos, use: debuginfo-install
cloog-ppl-0.15.9-0.0.f13.x86_64 elfutils-libelf-0.149-1.fc13.x86_64
glibc-2.12.1-4.0.f13.x86_64 gmp-4.3.2-0.0.f13.x86_64
libgcc-4.4.4-10.fc13.x86_64 libmpc-0.8.1-1.0.f13.x86_64
libstdc++-4.4.4-10.fc13.x86_64 mpfr-2.4.2-1.0.f13.x86_64
ppl-0.10.2-10.fc12.x86_64 zlib-1.2.3-23.fc12.x86_64
(gdb) bt
#0  0x00000000006ae43d in expand_default_init (binfo=0x7ffff1952000, 
    true_exp=0x7ffff195f150, exp=0x7ffff195f150, init=0x0, flags=3, complain=3)
    at ../../src/gcc/cp/init.c:1446
#1  0x00000000006ae849 in expand_aggr_init_1 (binfo=0x7ffff1952000, 
    true_exp=0x7ffff195f150, exp=0x7ffff195f150, init=0x0, flags=3, complain=3)
    at ../../src/gcc/cp/init.c:1536
#2  0x00000000006adb88 in build_aggr_init (exp=0x7ffff195f150, init=0x0, 
    flags=0, complain=3) at ../../src/gcc/cp/init.c:1351
#3  0x00000000006b54a6 in build_vec_init (base=0x7ffff1a1f960, 
    maxindex=0x7ffff1a00e70, init=0x0, explicit_value_init_p=0 '\000', 
    from_array=0, complain=3) at ../../src/gcc/cp/init.c:3164
#4  0x00000000006b20ee in build_new_1 (placement=0x7fffffffd3a8, 
    type=0x7ffff194f2a0, nelts=0x7ffff19fd500, init=0x7fffffffd3a0, 
    globally_qualified_p=0 '\000', complain=3) at ../../src/gcc/cp/init.c:2320
#5  0x00000000006b2bd3 in build_new (placement=0x7fffffffd3a8, 
    type=0x7ffff194f2a0, nelts=0x7ffff19fd500, init=0x7fffffffd3a0, 
    use_global_new=0, complain=3) at ../../src/gcc/cp/init.c:2582
#6  0x00000000006376fb in cp_parser_new_expression (parser=0x7ffff194e000)
    at ../../src/gcc/cp/parser.c:6197
#7  0x0000000000636fcb in cp_parser_unary_expression (parser=0x7ffff194e000, 
    address_p=0 '\000', cast_p=0 '\000', pidk=0x0)
    at ../../src/gcc/cp/parser.c:5890
#8  0x0000000000637f5f in cp_parser_cast_expression (parser=0x7ffff194e000, 
---Type <return> to continue, or q <return> to quit---
    address_p=0 '\000', cast_p=0 '\000', pidk=0x0)
    at ../../src/gcc/cp/parser.c:6653
#9  0x0000000000637fc3 in cp_parser_binary_expression (parser=0x7ffff194e000, 
    cast_p=0 '\000', no_toplevel_fold_p=0 '\000', prec=PREC_NOT_OPERATOR, 
    pidk=0x0) at ../../src/gcc/cp/parser.c:6750
#10 0x000000000063858f in cp_parser_assignment_expression (
    parser=0x7ffff194e000, cast_p=0 '\000', pidk=0x0)
    at ../../src/gcc/cp/parser.c:6966
#11 0x000000000063886d in cp_parser_constant_expression (
    parser=0x7ffff194e000, allow_non_constant_p=1 '\001', 
    non_constant_p=0x7fffffffd7ef "") at ../../src/gcc/cp/parser.c:7191
#12 0x000000000064980a in cp_parser_initializer_clause (parser=0x7ffff194e000, 
    non_constant_p=0x7fffffffd7ef "") at ../../src/gcc/cp/parser.c:16409
#13 0x00000000006385ef in cp_parser_assignment_expression (
    parser=0x7ffff194e000, cast_p=0 '\000', pidk=0x0)
    at ../../src/gcc/cp/parser.c:6985
#14 0x0000000000638764 in cp_parser_expression (parser=0x7ffff194e000, 
    cast_p=0 '\000', pidk=0x0) at ../../src/gcc/cp/parser.c:7112
#15 0x000000000063af75 in cp_parser_expression_statement (
    parser=0x7ffff194e000, in_statement_expr=0x0)
    at ../../src/gcc/cp/parser.c:8226
#16 0x000000000063ac42 in cp_parser_statement (parser=0x7ffff194e000, 
    in_statement_expr=0x0, in_compound=1 '\001', if_p=0x0)
---Type <return> to continue, or q <return> to quit---
    at ../../src/gcc/cp/parser.c:8091
#17 0x000000000063b568 in cp_parser_statement_seq_opt (parser=0x7ffff194e000, 
    in_statement_expr=0x0) at ../../src/gcc/cp/parser.c:8340
#18 0x000000000063b467 in cp_parser_compound_statement (parser=0x7ffff194e000, 
    in_statement_expr=0x0, in_try=0 '\000') at ../../src/gcc/cp/parser.c:8294
#19 0x000000000063cde7 in cp_parser_implicitly_scoped_statement (
    parser=0x7ffff194e000, if_p=0x0) at ../../src/gcc/cp/parser.c:9202
#20 0x000000000063b8d7 in cp_parser_selection_statement (
    parser=0x7ffff194e000, if_p=0x0) at ../../src/gcc/cp/parser.c:8486
#21 0x000000000063aaa1 in cp_parser_statement (parser=0x7ffff194e000, 
    in_statement_expr=0x0, in_compound=1 '\001', if_p=0x0)
    at ../../src/gcc/cp/parser.c:7997
#22 0x000000000063b568 in cp_parser_statement_seq_opt (parser=0x7ffff194e000, 
    in_statement_expr=0x0) at ../../src/gcc/cp/parser.c:8340
#23 0x000000000063b467 in cp_parser_compound_statement (parser=0x7ffff194e000, 
    in_statement_expr=0x0, in_try=0 '\000') at ../../src/gcc/cp/parser.c:8294
#24 0x0000000000648eb9 in cp_parser_function_body (parser=0x7ffff194e000)
    at ../../src/gcc/cp/parser.c:16265
#25 0x0000000000649424 in cp_parser_ctor_initializer_opt_and_function_body (
    parser=0x7ffff194e000) at ../../src/gcc/cp/parser.c:16302
#26 0x0000000000650554 in cp_parser_function_definition_after_declarator (
    parser=0x7ffff194e000, inline_p=0 '\000')
    at ../../src/gcc/cp/parser.c:19589
---Type <return> to continue, or q <return> to quit---
#27 0x0000000000650413 in
cp_parser_function_definition_from_specifiers_and_declarator
(parser=0x7ffff194e000, decl_specifiers=0x7fffffffde50, attributes=0x0, 
    declarator=0x1b7da30) at ../../src/gcc/cp/parser.c:19518
#28 0x0000000000645807 in cp_parser_init_declarator (parser=0x7ffff194e000, 
    decl_specifiers=0x7fffffffde50, checks=0x0, 
    function_definition_allowed_p=1 '\001', member_p=0 '\000', 
    declares_class_or_enum=0, function_definition_p=0x7fffffffde4f "\001")
    at ../../src/gcc/cp/parser.c:14412
#29 0x0000000000650e4c in cp_parser_single_declaration (parser=0x7ffff194e000, 
    checks=0x0, member_p=0 '\000', explicit_specialization_p=0 '\000', 
    friend_p=0x7fffffffdf0f "") at ../../src/gcc/cp/parser.c:19843
#30 0x00000000006507cc in cp_parser_template_declaration_after_export (
    parser=0x7ffff194e000, member_p=0 '\000')
    at ../../src/gcc/cp/parser.c:19693
#31 0x000000000063f901 in cp_parser_template_declaration (
    parser=0x7ffff194e000, member_p=0 '\000')
    at ../../src/gcc/cp/parser.c:11030
#32 0x000000000063d25d in cp_parser_declaration (parser=0x7ffff194e000)
    at ../../src/gcc/cp/parser.c:9369
#33 0x000000000063cff9 in cp_parser_declaration_seq_opt (parser=0x7ffff194e000)
    at ../../src/gcc/cp/parser.c:9299
#34 0x00000000006321a9 in cp_parser_translation_unit (parser=0x7ffff194e000)
    at ../../src/gcc/cp/parser.c:3432
---Type <return> to continue, or q <return> to quit---
#35 0x000000000065e76d in c_parse_file () at ../../src/gcc/cp/parser.c:24918
#36 0x00000000007ea80a in c_common_parse_file (set_yydebug=0)
    at ../../src/gcc/c-family/c-opts.c:1162
#37 0x0000000000c700be in compile_file () at ../../src/gcc/toplev.c:919
#38 0x0000000000c7259c in do_compile () at ../../src/gcc/toplev.c:2359
#39 0x0000000000c726c8 in toplev_main (argc=14, argv=0x7fffffffe258)
    at ../../src/gcc/toplev.c:2419
#40 0x0000000000809d14 in main (argc=14, argv=0x7fffffffe258)
    at ../../src/gcc/main.c:36
(gdb)