https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100279
--- Comment #2 from Bob Miller <bobmiller at nvidia dot com> --- In further minifying this example, I've discovered a related ICE. The ICE can be seen on godbolt here: https://godbolt.org/z/vxzG1zMjo I've attached a new preprocessed file that triggers the ICE. Code is as follows: template<auto V> struct T {}; template<auto X> void f(T<X>) {} template<auto V, auto V2> void E() { f(T<V>{}); f(T<V2>{}); } void foo() { E<-1.0, -2.0>(); } int main(int, char**) {return 0;} New example's error output: Using built-in specs. COLLECT_GCC=/opt/compiler-explorer/gcc-snapshot/bin/g++ Target: x86_64-linux-gnu Configured with: ../gcc-trunk-20210426/configure --prefix=/opt/compiler-explorer/gcc-build/staging --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu --disable-bootstrap --enable-multiarch --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --enable-clocale=gnu --enable-languages=c,c++,fortran,ada,d --enable-ld=yes --enable-gold=yes --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-linker-build-id --enable-lto --enable-plugins --enable-threads=posix --with-pkgversion=Compiler-Explorer-Build Thread model: posix Supported LTO compression algorithms: zlib gcc version 12.0.0 20210425 (experimental) (Compiler-Explorer-Build) COLLECT_GCC_OPTIONS='-fdiagnostics-color=always' '-g' '-o' '/app/output.s' '-masm=intel' '-S' '-std=c++20' '-v' '-save-temps' '-Wall' '-Wextra' '-fno-strict-aliasing' '-fwrapv' '-fno-aggressive-loop-optimizations' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-dumpdir' '/app/' /opt/compiler-explorer/gcc-trunk-20210426/bin/../libexec/gcc/x86_64-linux-gnu/12.0.0/cc1plus -E -quiet -v -imultiarch x86_64-linux-gnu -iprefix /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/ -D_GNU_SOURCE <source> -masm=intel -mtune=generic -march=x86-64 -std=c++20 -Wall -Wextra -fdiagnostics-color=always -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations -g -fworking-directory -fpch-preprocess -o /app/output.ii ignoring nonexistent directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../x86_64-linux-gnu/include" ignoring duplicate directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0" ignoring duplicate directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0/x86_64-linux-gnu" ignoring duplicate directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0/backward" ignoring duplicate directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/include" ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring duplicate directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/include-fixed" ignoring nonexistent directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../x86_64-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0 /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0/x86_64-linux-gnu /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0/backward /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/include /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/include-fixed /usr/local/include /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../include /usr/include/x86_64-linux-gnu /usr/include End of search list. COLLECT_GCC_OPTIONS='-fdiagnostics-color=always' '-g' '-o' '/app/output.s' '-masm=intel' '-S' '-std=c++20' '-v' '-save-temps' '-Wall' '-Wextra' '-fno-strict-aliasing' '-fwrapv' '-fno-aggressive-loop-optimizations' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-dumpdir' '/app/' /opt/compiler-explorer/gcc-trunk-20210426/bin/../libexec/gcc/x86_64-linux-gnu/12.0.0/cc1plus -fpreprocessed /app/output.ii -quiet -dumpdir /app/ -dumpbase output.cpp -dumpbase-ext .cpp -masm=intel -mtune=generic -march=x86-64 -g -Wall -Wextra -std=c++20 -version -fdiagnostics-color=always -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations -o /app/output.s GNU C++20 (Compiler-Explorer-Build) version 12.0.0 20210425 (experimental) (x86_64-linux-gnu) compiled by GNU C version 7.5.0, GMP version 6.1.0, MPFR version 3.1.4, MPC version 1.0.3, isl version isl-0.18-GMP GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 GNU C++20 (Compiler-Explorer-Build) version 12.0.0 20210425 (experimental) (x86_64-linux-gnu) compiled by GNU C version 7.5.0, GMP version 6.1.0, MPFR version 3.1.4, MPC version 1.0.3, isl version isl-0.18-GMP GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 Compiler executable checksum: d98c31982476edc90c9c0027eb63ad59 <source>:18:33: error: Two symbols with same comdat_group are not linked by the same_comdat_group list. 18 | int main(int, char**) {return 0;} | ^ _Z1fILdffffffff00000000EEv1TIXT_EE/4 (void f(T<X>) [with auto X = -2.0e+0]) @0x7fb785007660 Type: function definition analyzed Visibility: no_reorder public weak comdat comdat_group:_Z1fILdffffffff00000000EEv1TIXT_EE one_only previous sharing asm name: 3 References: Referring: Function flags: body Called by: _Z1EILdffffffff00000000ELdffffffff00000000EEvv/2 Calls: _Z1fILdffffffff00000000EEv1TIXT_EE/3 (void f(T<X>) [with auto X = -1.0e+0]) @0x7fb785007550 Type: function definition analyzed Visibility: no_reorder public weak comdat comdat_group:_Z1fILdffffffff00000000EEv1TIXT_EE one_only next sharing asm name: 4 References: Referring: Function flags: body Called by: _Z1EILdffffffff00000000ELdffffffff00000000EEvv/2 Calls: <source>:18:33: internal compiler error: symtab_node::verify failed 0x1cfe7f9 internal_error(char const*, ...) ???:0 0xb37622 symtab_node::verify_symtab_nodes() ???:0 0xb5398f symbol_table::finalize_compilation_unit() ???:0 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. ASM generation compiler returned: 1 Using built-in specs. COLLECT_GCC=/opt/compiler-explorer/gcc-snapshot/bin/g++ COLLECT_LTO_WRAPPER=/opt/compiler-explorer/gcc-trunk-20210426/bin/../libexec/gcc/x86_64-linux-gnu/12.0.0/lto-wrapper Target: x86_64-linux-gnu Configured with: ../gcc-trunk-20210426/configure --prefix=/opt/compiler-explorer/gcc-build/staging --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu --disable-bootstrap --enable-multiarch --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --enable-clocale=gnu --enable-languages=c,c++,fortran,ada,d --enable-ld=yes --enable-gold=yes --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-linker-build-id --enable-lto --enable-plugins --enable-threads=posix --with-pkgversion=Compiler-Explorer-Build Thread model: posix Supported LTO compression algorithms: zlib gcc version 12.0.0 20210425 (experimental) (Compiler-Explorer-Build) COLLECT_GCC_OPTIONS='-fdiagnostics-color=always' '-g' '-o' '/app/output.s' '-L.' '-std=c++20' '-v' '-save-temps' '-Wall' '-Wextra' '-fno-strict-aliasing' '-fwrapv' '-fno-aggressive-loop-optimizations' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-dumpdir' '/app/output.s-' /opt/compiler-explorer/gcc-trunk-20210426/bin/../libexec/gcc/x86_64-linux-gnu/12.0.0/cc1plus -E -quiet -v -imultiarch x86_64-linux-gnu -iprefix /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/ -D_GNU_SOURCE <source> -mtune=generic -march=x86-64 -std=c++20 -Wall -Wextra -fdiagnostics-color=always -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations -g -fworking-directory -fpch-preprocess -o /app/output.s-example.ii ignoring nonexistent directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../x86_64-linux-gnu/include" ignoring duplicate directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0" ignoring duplicate directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0/x86_64-linux-gnu" ignoring duplicate directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0/backward" ignoring duplicate directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/include" ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring duplicate directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/include-fixed" ignoring nonexistent directory "/opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../x86_64-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0 /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0/x86_64-linux-gnu /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/../../../../include/c++/12.0.0/backward /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/include /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/x86_64-linux-gnu/12.0.0/include-fixed /usr/local/include /opt/compiler-explorer/gcc-trunk-20210426/bin/../lib/gcc/../../include /usr/include/x86_64-linux-gnu /usr/include End of search list. COLLECT_GCC_OPTIONS='-fdiagnostics-color=always' '-g' '-o' '/app/output.s' '-L.' '-std=c++20' '-v' '-save-temps' '-Wall' '-Wextra' '-fno-strict-aliasing' '-fwrapv' '-fno-aggressive-loop-optimizations' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-dumpdir' '/app/output.s-' /opt/compiler-explorer/gcc-trunk-20210426/bin/../libexec/gcc/x86_64-linux-gnu/12.0.0/cc1plus -fpreprocessed /app/output.s-example.ii -quiet -dumpdir /app/output.s- -dumpbase example.cpp -dumpbase-ext .cpp -mtune=generic -march=x86-64 -g -Wall -Wextra -std=c++20 -version -fdiagnostics-color=always -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations -o /app/output.s-example.s GNU C++20 (Compiler-Explorer-Build) version 12.0.0 20210425 (experimental) (x86_64-linux-gnu) compiled by GNU C version 7.5.0, GMP version 6.1.0, MPFR version 3.1.4, MPC version 1.0.3, isl version isl-0.18-GMP GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 GNU C++20 (Compiler-Explorer-Build) version 12.0.0 20210425 (experimental) (x86_64-linux-gnu) compiled by GNU C version 7.5.0, GMP version 6.1.0, MPFR version 3.1.4, MPC version 1.0.3, isl version isl-0.18-GMP GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 Compiler executable checksum: d98c31982476edc90c9c0027eb63ad59 <source>:18:33: error: Two symbols with same comdat_group are not linked by the same_comdat_group list. 18 | int main(int, char**) {return 0;} | ^ _Z1fILdffffffff00000000EEv1TIXT_EE/4 (void f(T<X>) [with auto X = -2.0e+0]) @0x7f202ca39660 Type: function definition analyzed Visibility: no_reorder public weak comdat comdat_group:_Z1fILdffffffff00000000EEv1TIXT_EE one_only previous sharing asm name: 3 References: Referring: Function flags: body Called by: _Z1EILdffffffff00000000ELdffffffff00000000EEvv/2 Calls: _Z1fILdffffffff00000000EEv1TIXT_EE/3 (void f(T<X>) [with auto X = -1.0e+0]) @0x7f202ca39550 Type: function definition analyzed Visibility: no_reorder public weak comdat comdat_group:_Z1fILdffffffff00000000EEv1TIXT_EE one_only next sharing asm name: 4 References: Referring: Function flags: body Called by: _Z1EILdffffffff00000000ELdffffffff00000000EEvv/2 Calls: <source>:18:33: internal compiler error: symtab_node::verify failed 0x1cfe7f9 internal_error(char const*, ...) ???:0 0xb37622 symtab_node::verify_symtab_nodes() ???:0 0xb5398f symbol_table::finalize_compilation_unit() ???:0 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. Execution build compiler returned: 1
