A user of the R programming language has reported that std::regex
causes a hang for certain regular expressions when running in Japanese
locale. I was able to reproduce this both with our production
toolchain (mingw-w64 v5 + gcc 8) as well as the latest msys2
toolchains.
Is this a bug in mingw-w64 or elsewhere? Below a minimal example:
#include <regex>
int main() {
setlocale(LC_ALL, "Japanese");
std::regex reg("[0-9]");
return 0;
}
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