https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105565
--- Comment #1 from chenzhipeng <chenzhipeng02 at agora dot io> --- Comment on attachment 52954 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52954 isPrimeConstexpr for 1073741789 compiled successfully but 2147483647 fail >#include <iostream> > >using LL = long long; > >constexpr bool isPrimeR(LL n, LL c) { > return (c * c > n) ? true : (n % c == 0) ? false : isPrimeR(n, c + 2); >} > >constexpr bool isPrimeConstexpr(LL n) { > return (n <= 1) ? false : n < 4 || (n % 2 == 1 && isPrimeR(n, 3)); >} > >int main() { > { > constexpr LL m = 1073741789LL; // prime > constexpr bool x = isPrimeConstexpr(m); > std::cout << m << " is " << (x ? "prime" : "not prime") << '\n'; > } > > // g++-11: internal compiler error: Segmentation fault: 11 signal terminated > program cc1plus > // { > // constexpr LL m = 44657LL * 44683LL; // 1995408731 > // constexpr bool x = isPrimeConstexpr(m); > // std::cout << m << " is " << (x ? "prime" : "not prime") << '\n'; > // } > > // g++-11: internal compiler error: Segmentation fault: 11 signal terminated > program cc1plus > // { > // constexpr LL m = 2147483647LL; // prime 2^31 - 1 > // constexpr bool x = isPrimeConstexpr(m); > // std::cout << m << " is " << (x ? "prime" : "not prime") << '\n'; > // } > > return 0; >}
