https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89796
--- Comment #3 from Nicholas Krause <xerofoify at gmail dot com> --- (In reply to Arsène Pérard-Gayot from comment #2) > (In reply to Nicholas Krause from comment #1) > > I just compiled this like so: > > ./bin/g++ test.cpp -fopenmp -Wall -fconcepts -o name test2.cpp > > and got this on a build from yesterday: > > > > g++: 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. > > > > This code is linked to another version of this > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88395 as it crashes before your > > warning issue. I posted to > > the list here about a possible fix yesterday for it: > > > > https://gcc.gnu.org/ml/gcc/2019-03/msg00185.html > > Could you please explain the connection with this bug? From what I see, what > you are reporting here is unrelated to the warning issue, and the > segmentation fault only occurs because of your use of the "-fconcepts" flag. > Please correct me if I am wrong. Yes that's correct. However the problem is that it needs to compile and you would get this: test.cpp:2:5: error: ‘concept’ does not name a type 2 | concept bool Concept2 = requires (T t, U u) | ^~~~~~~ test.cpp:2:5: note: ‘concept’ only available with ‘-fconcepts’ test.cpp:8:5: error: ‘concept’ does not name a type 8 | concept bool Concept = Concept2 <T, T>; | ^~~~~~~ test.cpp:8:5: note: ‘concept’ only available with ‘-fconcepts’ test.cpp:12:19: error: ‘Concept’ has not been declared 12 | template <Concept T> | ^~~~~~~ test.cpp:13:35: error: ‘T’ was not declared in this scope 13 | constexpr S& operator += (T o); | ^ test.cpp:13:38: error: declaration of ‘operator+=’ as non-function 13 | constexpr S& operator += (T o); | ^ test.cpp: In function ‘constexpr S operator*(S, S)’: test.cpp:17:18: error: no match for ‘operator+=’ (operand types are ‘S’ and ‘S’) 17 | return a += b; | ~~^~~~ test2.cpp: In member function ‘void S::test(size_t&)’: test2.cpp:21:21: warning: value computed is not used [-Wunused-value] 21 | #pragma omp atomic capture | ^~~ Therefore it must be build must and that bug fixed first before we take on this bug unless you can send me a example without concepts required and just openmp code.
