std::regex infinite loop with gcc 5.4

The std::regex_match() doesn't finish (GCC 5.4.0 20160609, x86_64, Ubuntu 16.04).

But it works in some of online compilers: http://cpp.sh/ is ok, for exemple.

The code tries to match an INI-style section header with a possible "#"-comment.

#include <regex>

int main(int argc, char *argv[])
{
    std::regex headerPattern("([[:blank:]]*\\[[[:blank:]]*((?:[[:blank:]]*[^[:space:]]+[[:blank:]]*?)+)[[:blank:]]*\\][[:blank:]]*(?:#(?:[^[:space:]]*[[:blank:]]*)*)?)");
    std::smatch headerMatch;
    std::string l("[Hdr 100] # ------------ 22 22 4444 88888888 333");
    return std::regex_match(l, headerMatch, headerPattern) ? 0 : 1;
}

Build:

g++ -std=c++11 main.cpp -o main

Is there really a problem with the code?