third_party_benchmark/cmake/std_regex.cpp
Eric Fiselier c5a362b4d3 Change std::regex detection test to detect bug in libstdc++.
libstdc++'s std::regex has (or had) a bug in std::regex::operator=(...) that
caused undefined behaviour. Clang will detect this and compile the function so
that it crashes at runtime. This patch tried to detect that bug during
configuration.
2015-03-06 12:05:19 -05:00

11 lines
259 B
C++

#include <regex>
#include <string>
int main() {
const std::string str = "test0159";
std::regex re;
re = std::regex("^[a-z]+[0-9]+$",
std::regex_constants::extended | std::regex_constants::nosubs);
return std::regex_search(str, re) ? 0 : -1;
}