https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93250
Bug ID: 93250
Summary: [10 Regression] ICE: in sign_mask, at wide-int.h:855
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: larsbj at gullik dot net
Target Milestone: ---
Created attachment 47644
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47644&action=edit
Source showing the ICE
g++ (GCC) 10.0.0 20200111 (experimental) (from new git repo: cff5a23148)
Compiling the attached source gives:
g++ -std=gnu++17 -c v10.cpp
v10.cpp: In member function ‘long unsigned int a::c()’:
v10.cpp:6:30: internal compiler error: in sign_mask, at wide-int.h:855
6 | unsigned long a ::c() { d >> b; }
| ^
0x5f8c42 generic_wide_int<wide_int_ref_storage<true, false> >::sign_mask()
const
../../gcc/gcc/wide-int.h:855
0x5f922a generic_wide_int<wide_int_ref_storage<false, false> >::sign_mask()
const
../../gcc/gcc/tree.c:7373
0x5f922a bool wi::neg_p<generic_wide_int<wide_int_ref_storage<false, false> >
>(generic_wide_int<wide_int_ref_storage<false, false> > const&, signop)
../../gcc/gcc/wide-int.h:1836
0x5f922a tree_int_cst_sgn(tree_node const*)
../../gcc/gcc/tree.c:7386
0x77bdb1 cp_build_binary_op(op_location_t const&, tree_code, tree_node*,
tree_node*, int)
../../gcc/gcc/cp/typeck.c:5609
0x627f3b build_new_op_1
../../gcc/gcc/cp/call.c:6475
0x62886d build_new_op(op_location_t const&, tree_code, int, tree_node*,
tree_node*, tree_node*, tree_node**, int)
../../gcc/gcc/cp/call.c:6520
0x773146 build_x_binary_op(op_location_t const&, tree_code, tree_node*,
tree_code, tree_node*, tree_code, tree_node**, int)
../../gcc/gcc/cp/typeck.c:4245
0x6db3bd cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:9648
0x6dbf27 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9783
0x6dc1b2 cp_parser_expression
../../gcc/gcc/cp/parser.c:9951
0x6defc8 cp_parser_expression_statement
../../gcc/gcc/cp/parser.c:11602
0x6e96e3 cp_parser_statement
../../gcc/gcc/cp/parser.c:11398
0x6eadb8 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11745
0x6eae70 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:11699
0x700590 cp_parser_function_body
../../gcc/gcc/cp/parser.c:22901
0x700590 cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:22952
0x703b0d cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:28739
0x704a97 cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/gcc/cp/parser.c:28655
0x704a97 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:20530
Compiling with GCC9 works fine. (except for one warning)
