https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93502
--- Comment #2 from Nadav Har'El <nyh at math dot technion.ac.il> --- Maybe you mean it is a dup of https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86164 ? But I'm not sure. I honestly don't understand the conclusion there that ".*" is implemented recursively. Why would such a simple case, easily converted to a deterministic finite automaton with no memory usage at all - need recursion? Anyway, this is serious bug, which caused a stack overflow and a crash in a real application. Theoretically such stack overflows can even be exploited by attackers (although it doesn't look easy).
