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The function pointer type declaration requires name to be a const char*
Generator::throw() on a running generator is not allowed. It throws "Cannot resume an already running generator" when trying to resume the generator to handle the provided exception. However, when calling Generator::throw() on a generator with a non-Generator delegate, we release the delegate regardless. If a Fiber was suspended in the delegate, this causes use after frees when the Fiber is resumed. Fix this by throwing "Cannot resume an already running generator" earlier. Fixes GH-19326 Closes GH-19327
* PHP-8.3: Prevent throwing in running generator
* PHP-8.4: Prevent throwing in running generator
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