https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110913
Bug ID: 110913 Summary: internal compiler error when I pass temporary vector of string to co_await target function Product: gcc Version: 13.2.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: redboltz at gmail dot com Target Milestone: --- # Environment ## gcc --version gcc (GCC) 13.2.1 20230730 Copyright (C) 2023 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ## gcc -v Using built-in specs. COLLECT_GCC=/usr/bin/gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/13.2.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /build/gcc/src/gcc/configure --enable-languages=ada,c,c++,d,fortran,go,lto,objc,obj-c++ --enable-bootstrap --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --with-build-config=bootstrap-lto --with-linker-hash-style=gnu --with-system-zlib --enable-__cxa_atexit --enable-cet=auto --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-default-ssp --enable-gnu-indirect-function --enable-gnu-unique-object --enable-libstdcxx-backtrace --enable-link-serialization=1 --enable-linker-build-id --enable-lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --disable-libssp --disable-libstdcxx-pch --disable-werror Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 13.2.1 20230730 (GCC) ## uname -a Linux archboltz 6.4.7-arch1-2 #1 SMP PREEMPT_DYNAMIC Mon, 31 Jul 2023 11:41:04 +0000 x86_64 GNU/Linux compile option -std=c++20 -O0 -Wall -Wextra -pedantic # Overview The following internal compiler error is reported: ``` cpp20coro_error.cpp: In function ‘boost::asio::awaitable<void> test2(boost::asio::io_context&)’: cpp20coro_error.cpp:37:1: internal compiler error: in build_special_member_call, at cp/call.cc:11093 37 | } | ^ 0x1ad3438 internal_error(char const*, ...) ???:0 0x6b7b33 fancy_abort(char const*, int, char const*) ???:0 0x10dc453 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*, tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*)) ???:0 0x10dc453 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*, tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*)) ???:0 0x10dc573 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*, tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*)) ???:0 0x10dc453 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*, tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*)) ???:0 0x10dc453 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*, tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*)) ???:0 0x10dc453 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*, tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*)) ???:0 0x10dc573 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*, tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*)) ???:0 0x10dc453 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*, tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*)) ???:0 0x10dc453 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*, tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*)) ???:0 0x74de61 finish_function(bool) ???:0 0x944370 c_common_parse_file() ???:0 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://bugs.archlinux.org/> for instructions. ``` # Reproduce code ``` #include <vector> #include <string> #include <coroutine> #include <boost/asio.hpp> #define REPRODUCE_ISSUE 1 boost::asio::awaitable<void> test1(boost::asio::io_context& ioc) { co_await boost::asio::post( ioc, boost::asio::append( boost::asio::use_awaitable, std::vector<int> { 1, 2, 3 } ) ); } boost::asio::awaitable<void> test2(boost::asio::io_context& ioc) { std::vector<std::string> str{ "aaa", "bbb" }; co_await boost::asio::post( ioc, boost::asio::append( boost::asio::use_awaitable, #if REPRODUCE_ISSUE std::vector<std::string> { "aaa", "bbb" } #else str #endif ) ); } int main() { boost::asio::io_context ioc; boost::asio::co_spawn(ioc, test1(ioc), boost::asio::detached); boost::asio::co_spawn(ioc, test2(ioc), boost::asio::detached); ioc.run(); } ``` The error happens only if I passed temporary std::vector<std::string> variable to the function coming after co_await (test2). If I use non temporary variable then no errors occurred (You can test it by seting macro REPRODUCE_ISSUE 0. If I use temporay std::vector<int>, no errors occurred (test1). Here are godbolt result: x86-64 clang 16.0.0 -std=c++20 https://godbolt.org/z/qnWqrcPKc The same error is reported. x86-64 clang 13.2 -std=c++20 https://godbolt.org/z/K74G65Yb1 No errors are reported.