[Bug c++/97720] throw in try in noexcept fn calls terminate without handling the exception

[jason at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97720

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Note that Foo is unneeded, this shows the same behavior:

void bad_guy() throw() {
  try { throw 0; }
  catch (float) { }
  // Don't catch int.                                                           
}

void level1() {
  bad_guy();
  throw "dead code";
}

int main() {
  try { level1(); }
  catch (int) { }
}

// terminate called without an active exception

Without the throw "dead code" the compiler optimizes away the catch in main, so
the handler search finds nothing, so __cxa_throw calls __cxa_call_terminate and
std::current_exception is set properly.

But of course the catch in main shouldn't make a difference, the search should
never leave bad_guy.