https://github.com/euloanty/fast_io/blob/master/examples/0036.concepts_check/iostrm.cc
cqwrteur@DESKTOP-7H7UHQ9:/mnt/d/hg/fast_io/examples/build$ ninja
[1/2] Building CXX object CMakeFiles/iostrm.dir/0036.concepts_check/iostrm.cc.o
FAILED: CMakeFiles/iostrm.dir/0036.concepts_check/iostrm.cc.o
/usr/local/bin/c++ -O3 -DNDEBUG -fconcepts -ffast-math -Wall -Wextra
-std=gnu++2a -MD -MT CMakeFiles/iostrm.dir/0036.concepts_check/iostrm.cc.o -MF
CMakeFiles/iostrm.dir/0036.concepts_check/iostrm.cc.o.d -o
CMakeFiles/iostrm.dir/0036.concepts_check/iostrm.cc.o -c
../0036.concepts_check/iostrm.cc
../0036.concepts_check/iostrm.cc: In function ‘int main()’:
../0036.concepts_check/iostrm.cc:8:51: error: deduced initializer does not
satisfy placeholder constraints
8 | fast_io::stream auto fin(std::ifstream("abc.txt"));
| ^
../0036.concepts_check/iostrm.cc:8:51: note: constraints not satisfied
c++: internal compiler error: Segmentation fault signal terminated program
cc1plus
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
ninja: build stopped: subcommand failed.
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