https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85415
Bug ID: 85415 Summary: internal compiler error: in finish_member_declaration, at cp/semantics.c:2984 Product: gcc Version: 7.3.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: frederik.engels24 at gmail dot com Target Milestone: --- Created attachment 43944 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43944&action=edit testcase triggering error Not sure if this is similar to #82722. Seems to happen when trying to use fold expressions, but the same thing occurred when I used std::make_tuple to execute over all tuple members. The same code compiles in clang 6.0.0 and MSVC Here is the full output, with the testcase as an attachment Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release --enable-default-pie --enable-default-ssp Thread model: posix gcc version 7.3.1 20180312 (GCC) COLLECT_GCC_OPTIONS='-v' '-Wall' '-Wextra' '-save-temps' '-std=c++1z' '-o' 'testcase' '-mtune=generic' '-march=x86-64' /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/cc1plus -E -quiet -v -D_GNU_SOURCE testcase.cpp -mtune=generic -march=x86-64 -std=c++1z -Wall -Wextra -fpch-preprocess -o testcase.ii ignoring nonexistent directory "/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/../../../../x86_64-pc-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/../../../../include/c++/7.3.1 /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/../../../../include/c++/7.3.1/x86_64-pc-linux-gnu /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/../../../../include/c++/7.3.1/backward /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/include /usr/local/include /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/include-fixed /usr/include End of search list. COLLECT_GCC_OPTIONS='-v' '-Wall' '-Wextra' '-save-temps' '-std=c++1z' '-o' 'testcase' '-mtune=generic' '-march=x86-64' /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/cc1plus -fpreprocessed testcase.ii -quiet -dumpbase testcase.cpp -mtune=generic -march=x86-64 -auxbase testcase -Wall -Wextra -std=c++1z -version -o testcase.s GNU C++14 (GCC) version 7.3.1 20180312 (x86_64-pc-linux-gnu) compiled by GNU C version 7.3.1 20180312, GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version isl-0.18-GMP GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU C++14 (GCC) version 7.3.1 20180312 (x86_64-pc-linux-gnu) compiled by GNU C version 7.3.1 20180312, GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version isl-0.18-GMP GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 3fb60f63f2e4dccab1b015b716b8b627 testcase.cpp: In instantiation of ‘tuple_vector<Ts>::clear_all()::<lambda(auto:1& ...)> [with auto:1 = {std::vector<int, std::allocator<int> >, std::vector<bool, std::allocator<bool> >, std::vector<double, std::allocator<double> >}; Ts = {int, bool, double}]’: /usr/include/c++/7.3.1/type_traits:2428:26: required by substitution of ‘template<class _Fn, class ... _Args> static std::__result_of_success<decltype (declval<_Fn>()((declval<_Args>)()...)), std::__invoke_other> std::__result_of_other_impl::_S_test(int) [with _Fn = tuple_vector<Ts>::clear_all() [with Ts = {int, bool, double}]::<lambda(auto:1& ...)>; _Args = {std::vector<int, std::allocator<int> >&, std::vector<bool, std::allocator<bool> >&, std::vector<double, std::allocator<double> >&}]’ /usr/include/c++/7.3.1/type_traits:2439:55: required from ‘struct std::__result_of_impl<false, false, tuple_vector<Ts>::clear_all() [with Ts = {int, bool, double}]::<lambda(auto:1& ...)>, std::vector<int, std::allocator<int> >&, std::vector<bool, std::allocator<bool> >&, std::vector<double, std::allocator<double> >&>’ /usr/include/c++/7.3.1/type_traits:2444:12: required from ‘struct std::__invoke_result<tuple_vector<Ts>::clear_all() [with Ts = {int, bool, double}]::<lambda(auto:1& ...)>, std::vector<int, std::allocator<int> >&, std::vector<bool, std::allocator<bool> >&, std::vector<double, std::allocator<double> >&>’ /usr/include/c++/7.3.1/bits/invoke.h:89:5: required by substitution of ‘template<class _Callable, class ... _Args> constexpr typename std::__invoke_result<_Functor, _ArgTypes>::type std::__invoke(_Callable&&, _Args&& ...) [with _Callable = tuple_vector<Ts>::clear_all() [with Ts = {int, bool, double}]::<lambda(auto:1& ...)>; _Args = {std::vector<int, std::allocator<int> >&, std::vector<bool, std::allocator<bool> >&, std::vector<double, std::allocator<double> >&}]’ /usr/include/c++/7.3.1/tuple:1662:27: required from ‘constexpr decltype(auto) std::__apply_impl(_Fn&&, _Tuple&&, std::index_sequence<_Idx ...>) [with _Fn = tuple_vector<Ts>::clear_all() [with Ts = {int, bool, double}]::<lambda(auto:1& ...)>; _Tuple = std::tuple<std::vector<int, std::allocator<int> >, std::vector<bool, std::allocator<bool> >, std::vector<double, std::allocator<double> > >&; long unsigned int ..._Idx = {0, 1, 2}; std::index_sequence<_Idx ...> = std::integer_sequence<long unsigned int, 0, 1, 2>]’ /usr/include/c++/7.3.1/tuple:1671:31: required from ‘constexpr decltype(auto) std::apply(_Fn&&, _Tuple&&) [with _Fn = tuple_vector<Ts>::clear_all() [with Ts = {int, bool, double}]::<lambda(auto:1& ...)>; _Tuple = std::tuple<std::vector<int, std::allocator<int> >, std::vector<bool, std::allocator<bool> >, std::vector<double, std::allocator<double> > >&]’ testcase.cpp:17:19: required from ‘void tuple_vector<Ts>::clear_all() [with Ts = {int, bool, double}]’ testcase.cpp:28:27: required from here testcase.cpp:19:84: internal compiler error: in finish_member_declaration, at cp/semantics.c:2984 (clear<typename std::remove_reference_t<decltype(vectors)>::value_type>(), ...); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~ Please submit a full bug report, with preprocessed source if appropriate. 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