http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58207
Bug ID: 58207
Summary: ICE in sort_constexpr_mem_initializers due to out of
bounds vector access
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: tsaunders at mozilla dot com
Created attachment 30680
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30680&action=edit
preprocessed and somewhat reduced test case
The attached test case causes an ICE after errors with xg++ (GCC) 4.9.0
20130817 (experimental) as well as with g++ 4.8.0 but not with g++ 4.7.2
#0 diagnostic_report_diagnostic (context=0x1823300
<global_diagnostic_context>, diagnostic=diagnostic@entry=0x7fffffffda00) at
../../gcc/gcc/diagnostic.c:757
location = 3464477
orig_diag_kind = DK_ICE
saved_format_spec = <optimized out>
#1 0x0000000000ffbf80 in internal_error (gmsgid=gmsgid@entry=0x13e2d6b "in %s,
at %s:%d") at ../../gcc/gcc/diagnostic.c:1127
diagnostic = {message = {format_spec = 0x13e2d6b "in %s, at %s:%d",
args_ptr = 0x7fffffffd9e8, err_no = 2, locus = 0x7ffff6974093
<__GI___libc_malloc+99>, x_data = 0x0}, location = 3464477, override_column =
0,
x_data = 0x0, kind = DK_ICE, option_index = 0}
ap = {{gp_offset = 8, fp_offset = 48, overflow_arg_area =
0x7fffffffdb00, reg_save_area = 0x7fffffffda40}}
__FUNCTION__ = "internal_error"
#2 0x0000000000ffa7f4 in fancy_abort (file=file@entry=0x109f4c0
"../../gcc/gcc/vec.h", line=line@entry=827, function=function@entry=0x10cf8a0
<_ZZN3vecI17constructor_elt_d5va_gc8vl_embedEixEjE12__FUNCTION__> "operator[]")
at ../../gcc/gcc/diagnostic.c:1181
No locals.
#3 0x00000000006be2b8 in vec<constructor_elt_d, va_gc, vl_embed>::operator[]
(ix=0, this=<optimized out>) at ../../gcc/gcc/vec.h:827
No locals.
#4 0x00000000006d6427 in operator[] (ix=<optimized out>, this=<optimized out>)
at ../../gcc/gcc/tree.h:4111
No locals.
#5 build_constexpr_constructor_member_initializers (body=<optimized out>,
type=0x7ffff5337bd0) at ../../gcc/gcc/cp/semantics.c:6207
vec = 0x7ffff5376e58
ok = <optimized out>
#6 massage_constexpr_body (fun=fun@entry=0x7ffff53c5300,
body=body@entry=0x7ffff53bbb10) at ../../gcc/gcc/cp/semantics.c:6280
__FUNCTION__ = "massage_constexpr_body"
#7 0x00000000006ddbb4 in register_constexpr_fundef
(fun=fun@entry=0x7ffff53c5300, body=0x7ffff53bbb10) at
../../gcc/gcc/cp/semantics.c:6384
entry = {decl = 0x7ffff53c5300, body = 0x2}
slot = <optimized out>
__FUNCTION__ = "register_constexpr_fundef"
#8 0x000000000057c058 in maybe_save_function_definition (fun=<optimized out>)
at ../../gcc/gcc/cp/decl.c:13761
No locals.
#9 finish_function (flags=flags@entry=3) at ../../gcc/gcc/cp/decl.c:13882
fndecl = 0x7ffff53c5300
fntype = 0x7ffff53c6000
ctype = 0x0
__FUNCTION__ = "finish_function"
inclass_inline = 1
#10 0x00000000006643be in cp_parser_function_definition_after_declarator
(parser=parser@entry=0x7ffff68d40b0, inline_p=inline_p@entry=true) at
../../gcc/gcc/cp/parser.c:22275
fn = <optimized out>
ctor_initializer_p = true
saved_in_unbraced_linkage_specification_p = false
saved_in_function_body = false
saved_num_template_parameter_lists = 0
#11 0x000000000064a09d in cp_parser_late_parsing_for_member
(member_function=<optimized out>, parser=0x7ffff68d40b0) at
../../gcc/gcc/cp/parser.c:22921
function_scope = 0x0
tokens = 0x7ffff538cbc0
#12 cp_parser_class_specifier_1 (parser=parser@entry=0x7ffff68d40b0) at
../../gcc/gcc/cp/parser.c:19014
decl = <optimized out>
pushed_scope = <optimized out>
e = <optimized out>
class_type = <optimized out>
ix = 3
nested_name_specifier_p = <optimized out>
saved_num_template_parameter_lists = <optimized out>
saved_in_function_body = <optimized out>
saved_in_unbraced_linkage_specification_p = <optimized out>
scope = <optimized out>
type = <optimized out>
in_switch_statement_p = <optimized out>
__FUNCTION__ = "cp_parser_class_specifier_1"
attributes = <optimized out>
in_statement = <optimized out>
old_scope = <optimized out>
closing_brace = <optimized out>
#13 0x000000000064c211 in cp_parser_class_specifier (parser=0x7ffff68d40b0) at
../../gcc/gcc/cp/parser.c:19038
ret = <optimized out>
#14 cp_parser_type_specifier (parser=parser@entry=0x7ffff68d40b0,
flags=flags@entry=1, decl_specs=decl_specs@entry=0x7fffffffdf00,
is_declaration=is_declaration@entry=true,
declares_class_or_enum=declares_class_or_enum@entry=0x7fffffffde7c,
is_cv_qualifier=is_cv_qualifier@entry=0x7fffffffde7b) at
../../gcc/gcc/cp/parser.c:14040
type_spec = 0x0
keyword = <optimized out>
ds = ds_last
#15 0x00000000006616ca in cp_parser_decl_specifier_seq
(parser=parser@entry=0x7ffff68d40b0, flags=flags@entry=1,
decl_specs=decl_specs@entry=0x7fffffffdf00,
declares_class_or_enum=declares_class_or_enum@entry=0x7fffffffdefc)
at ../../gcc/gcc/cp/parser.c:11283
decl_spec_declares_class_or_enum = 0
is_cv_qualifier = false
type_spec = <optimized out>
found_decl_spec = true
__FUNCTION__ = "cp_parser_decl_specifier_seq"
constructor_possible_p = <optimized out>
start_token = <optimized out>
ds = ds_last
#16 0x00000000006651aa in cp_parser_simple_declaration
(parser=parser@entry=0x7ffff68d40b0,
function_definition_allowed_p=function_definition_allowed_p@entry=true,
maybe_range_for_decl=maybe_range_for_decl@entry=0x0)
at ../../gcc/gcc/cp/parser.c:10873
decl_specifiers = {locations = {0 <repeats 22 times>}, type = 0x0,
attributes = 0x0, std_attributes = 0x0, redefined_builtin_type = 0x0,
storage_class = sc_none, type_definition_p = 0, multiple_types_p = 0,
conflicting_specifiers_p = 0, any_specifiers_p = 0,
any_type_specifiers_p = 0, explicit_int_p = 0, explicit_int128_p = 0,
explicit_char_p = 0, gnu_thread_keyword_p = 0}
declares_class_or_enum = 0
saw_declarator = <optimized out>
__FUNCTION__ = "cp_parser_simple_declaration"
#17 0x00000000006671b1 in cp_parser_block_declaration (parser=0x7ffff68d40b0,
statement_p=<optimized out>) at ../../gcc/gcc/cp/parser.c:10822
statement_p = <optimized out>
parser = 0x7ffff68d40b0
#18 0x000000000067022c in cp_parser_declaration
(parser=parser@entry=0x7ffff68d40b0) at ../../gcc/gcc/cp/parser.c:10719
token1 = <optimized out>
saved_pedantic = 0
token2 = <optimized out>
p = 0x18dba00
attributes = <optimized out>
#19 0x000000000066eefe in cp_parser_declaration_seq_opt
(parser=parser@entry=0x7ffff68d40b0) at ../../gcc/gcc/cp/parser.c:10605
No locals.
#20 0x000000000066f111 in cp_parser_namespace_body (parser=0x7ffff68d40b0) at
../../gcc/gcc/cp/parser.c:15528
No locals.
#21 cp_parser_namespace_definition (parser=0x7ffff68d40b0) at
../../gcc/gcc/cp/parser.c:15509
attribs = 0x0
__FUNCTION__ = "cp_parser_namespace_definition"
identifier = 0x7ffff6875058
has_visibility = false
is_inline = false
#22 0x000000000067019e in cp_parser_declaration
(parser=parser@entry=0x7ffff68d40b0) at ../../gcc/gcc/cp/parser.c:10707
token1 = {type = <optimized out>, keyword = RID_NAMESPACE, flags =
<optimized out>, pragma_kind = <optimized out>, implicit_extern_c = <optimized
out>, ambiguous_p = <optimized out>, purged_p = <optimized out>,
location = <optimized out>, u = {tree_check_value = <optimized out>,
value = <optimized out>}}
saved_pedantic = 0
token2 = {type = CPP_NAME, keyword = RID_MAX, flags = <optimized out>,
pragma_kind = <optimized out>, implicit_extern_c = <optimized out>, ambiguous_p
= <optimized out>, purged_p = <optimized out>,
location = <optimized out>, u = {tree_check_value = <optimized out>,
value = <optimized out>}}
p = 0x18dba00
attributes = 0x0
#23 0x000000000066eefe in cp_parser_declaration_seq_opt
(parser=parser@entry=0x7ffff68d40b0) at ../../gcc/gcc/cp/parser.c:10605
No locals.
#24 0x00000000006707b3 in cp_parser_translation_unit (parser=0x7ffff68d40b0) at
../../gcc/gcc/cp/parser.c:3930
success = <optimized out>
declarator_obstack_base = 0x18dba00
#25 c_parse_file () at ../../gcc/gcc/cp/parser.c:28829
already_called = true
#26 0x0000000000784375 in c_common_parse_file () at
../../gcc/gcc/c-family/c-opts.c:1046
i = 0
#27 0x0000000000af5c26 in compile_file () at ../../gcc/gcc/toplev.c:546
No locals.
#28 0x0000000000af7a38 in do_compile () at ../../gcc/gcc/toplev.c:1878
No locals.
#29 toplev_main (argc=3, argv=0x7fffffffe2b8) at ../../gcc/gcc/toplev.c:1954
No locals.
