https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106011
Bug ID: 106011
Summary: [12 Regression] ICE: unexpected expression 'ElemSize'
of kind template_parm_index
Product: gcc
Version: 12.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
seen with the gcc-12 branch 20220616, trying to build the 0ad package:
$ cat Unified_cpp_js_src4.ii
typedef unsigned size_t;
template <size_t ElemSize> decltype(0 % ElemSize == 0)
$ LANG=C g++ -c -O0 Unified_cpp_js_src4.ii
Unified_cpp_js_src4.ii:2:50: internal compiler error: unexpected expression
'ElemSize' of kind template_parm_index
2 | template <size_t ElemSize> decltype(0 % ElemSize == 0)
| ~~~~~~~~~~~~~^~~~
0x6d9b71 cxx_eval_constant_expression
../../src/gcc/cp/constexpr.cc:7587
0x6d9ec0 cxx_eval_outermost_constant_expr
../../src/gcc/cp/constexpr.cc:7824
0x6dbdcc potential_constant_expression_1
../../src/gcc/cp/constexpr.cc:9274
0x6dc636 potential_constant_expression_1(tree_node*, bool, bool, bool, int)
../../src/gcc/cp/constexpr.cc:9550
0x6dc636 is_constant_expression(tree_node*)
../../src/gcc/cp/constexpr.cc:9607
0x6dc636 is_nondependent_constant_expression(tree_node*)
../../src/gcc/cp/constexpr.cc:9644
0x6dd0c0 maybe_constant_value(tree_node*, tree_node*, bool)
../../src/gcc/cp/constexpr.cc:8071
0x7435eb fold_for_warn(tree_node*)
../../src/gcc/cp/expr.cc:416
0x8ad582 shorten_compare(unsigned int, tree_node**, tree_node**, tree_node**,
tree_code*)
../../src/gcc/c-family/c-common.cc:3237
0x86fef7 cp_build_binary_op(op_location_t const&, tree_code, tree_node*,
tree_node*, int)
../../src/gcc/cp/typeck.cc:6158
0x6b97ac build_new_op(op_location_t const&, tree_code, int, tree_node*,
tree_node*, tree_node*, tree_node*, tree_node**, int)
../../src/gcc/cp/call.cc:6935
0x866dff build_x_binary_op(op_location_t const&, tree_code, tree_node*,
tree_code, tree_node*, tree_code, tree_node*, tree_node**, int)
../../src/gcc/cp/typeck.cc:4563
0x80a7c7 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../src/gcc/cp/pt.cc:20369
0x80e32a instantiate_non_dependent_expr_internal(tree_node*, int)
../../src/gcc/cp/pt.cc:6367
0x80e32a instantiate_non_dependent_expr_sfinae(tree_node*, int)
../../src/gcc/cp/pt.cc:6388
0x846e6f finish_decltype_type(tree_node*, bool, int)
../../src/gcc/cp/semantics.cc:11255
0x7cfb31 cp_parser_decltype
../../src/gcc/cp/parser.cc:16540
0x7e7447 cp_parser_simple_type_specifier
../../src/gcc/cp/parser.cc:19647
0x7c5435 cp_parser_type_specifier
../../src/gcc/cp/parser.cc:19424
0x7c6349 cp_parser_decl_specifier_seq
../../src/gcc/cp/parser.cc:15905
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Please include the complete backtrace with any bug report.
