We just return a failure if there is a stack overflow exception.
Apparently
that is what the old code did too :-/
No, the old code did:
if (result == EXCEPTION && !Top::has_pending_exception()) {
// We detected a stack overflow (on the backtrack stack) in RegExp code,
// but haven't created the exception yet.
Top::StackOverflow();
}
[from NativeRegExpMacroAssembler::Execute(...) in regexp-macro-assembler.cc]
http://codereview.chromium.org/521028
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