https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89852
Bug ID: 89852 Summary: [9 Regression] ICE in Product: gcc Version: 9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: doko at debian dot org Target Milestone: --- seen with trunk r269832, the reduced test is a little bit too much reduced ... $ cat tst_Controller.ii namespace std { namespace chrono { struct a { int b; } typedef microseconds; } // namespace chrono } // namespace std namespace ableton { namespace link { struct c { c(double); }; struct B { B(double); }; struct d { B e; c f; std::chrono::microseconds g; }; namespace { const auto kAnyTime = std::chrono::a{}; template <typename> void h() { d { 60., 0., kAnyTime $ g++ -c -O0 -Werror -Wno-multichar -std=gnu++11 tst_Controller.ii tst_Controller.ii: In function 'void ableton::link::{anonymous}::h()': tst_Controller.ii:25:14: internal compiler error: unexpected expression '(std::chrono::microseconds)ableton::link::{anonymous}::kAnyTime' of kind implicit_conv_expr 25 | 60., 0., kAnyTime | ^~~~~~~~ 0x5c6940 cxx_eval_constant_expression ../../src/gcc/cp/constexpr.c:5167 0xeb7394 cxx_eval_outermost_constant_expr ../../src/gcc/cp/constexpr.c:5281 0xebac0e maybe_constant_init_1 ../../src/gcc/cp/constexpr.c:5637 0x12dc6bd massage_init_elt ../../src/gcc/cp/typeck2.c:1329 0xf63e32 process_init_constructor_record ../../src/gcc/cp/typeck2.c:1548 0xf63e32 process_init_constructor ../../src/gcc/cp/typeck2.c:1822 0xf63e32 digest_init_r ../../src/gcc/cp/typeck2.c:1218 0x12d536e finish_compound_literal(tree_node*, tree_node*, int, fcl_t) ../../src/gcc/cp/semantics.c:2874 0xf1890b cp_parser_functional_cast ../../src/gcc/cp/parser.c:28318 0xf0fb84 cp_parser_postfix_expression ../../src/gcc/cp/parser.c:7098 0xf0e522 cp_parser_unary_expression ../../src/gcc/cp/parser.c:8469 0xf0df9f cp_parser_cast_expression ../../src/gcc/cp/parser.c:9355 0xf0d0ab cp_parser_binary_expression ../../src/gcc/cp/parser.c:9457 0xf0bf37 cp_parser_assignment_expression ../../src/gcc/cp/parser.c:9754 0xf1270b cp_parser_expression ../../src/gcc/cp/parser.c:9921 0xf14925 cp_parser_expression_statement ../../src/gcc/cp/parser.c:11485 0xf13c97 cp_parser_statement ../../src/gcc/cp/parser.c:11281 0xf1372e cp_parser_statement_seq_opt ../../src/gcc/cp/parser.c:11628 0xf1372e cp_parser_compound_statement ../../src/gcc/cp/parser.c:11582 0xf1317e cp_parser_function_body ../../src/gcc/cp/parser.c:22631 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report.