https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110323
Bug ID: 110323 Summary: Code for explicit instantiation of template method of template class Product: gcc Version: 11.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: stlim0727 at gmail dot com Target Milestone: --- Code for explicit instantiation of a template method of a class is not generated with following code: $ cat > test.cpp #include <type_traits> constexpr int VAL = 1; struct foo { template <int B> void bar(typename std::conditional<B==VAL, int, float>::type arg) { } }; template void foo::bar<1>(int arg); Code is not generated for g++11 and above versions: $ g++12 -S -o- -c test.cpp .file "test.cpp" .text .section .rodata .align 4 .type _ZL3VAL, @object .size _ZL3VAL, 4 _ZL3VAL: .long 1 .ident "GCC: (GNU) 12.1.1 20220628 (Red Hat 12.1.1-3)" .section .note.GNU-stack,"",@progbits However, the code is generated if I replace "B==VAL" with "B==1" or if I use g++10 and below versions: $ g++8 -S -o- -c test.cpp .file "test.cpp" .text .section .rodata .align 4 .type _ZL3VAL, @object .size _ZL3VAL, 4 _ZL3VAL: .long 1 .section .text._ZN3foo3barILi1EEEvNSt11conditionalIXeqT_L_ZL3VALEEifE4typeE,"axG",@progbits,_ZN3foo3barILi1EEEvNSt11conditionalIXeqT_L_ZL3VALEEifE4typeE,comdat .align 2 .weak _ZN3foo3barILi1EEEvNSt11conditionalIXeqT_L_ZL3VALEEifE4typeE .type _ZN3foo3barILi1EEEvNSt11conditionalIXeqT_L_ZL3VALEEifE4typeE, @function _ZN3foo3barILi1EEEvNSt11conditionalIXeqT_L_ZL3VALEEifE4typeE: .LFB9: .cfi_startproc pushq %rbp .cfi_def_cfa_offset 16 .cfi_offset 6, -16 movq %rsp, %rbp .cfi_def_cfa_register 6 movq %rdi, -8(%rbp) movl %esi, -12(%rbp) nop popq %rbp .cfi_def_cfa 7, 8 ret .cfi_endproc .LFE9: .size _ZN3foo3barILi1EEEvNSt11conditionalIXeqT_L_ZL3VALEEifE4typeE, .-_ZN3foo3barILi1EEEvNSt11conditionalIXeqT_L_ZL3VALEEifE4typeE .ident "GCC: (GNU) 8.5.0 20210514 (Red Hat 8.5.0-18)" .section .note.GNU-stack,"",@progbits