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GH-96421: Insert shim frame on entry to interpreter (GH-96319)

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* Adds EXIT_INTERPRETER instruction to exit PyEval_EvalDefault()

* Simplifies RETURN_VALUE, YIELD_VALUE and RETURN_GENERATOR instructions as they no longer need to check for entry frames.
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Mark Shannon 2022-11-10 04:34:57 -08:00 • committed by GitHub
parent dbf2faf579
commit 1e197e63e2
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GPG key ID: 4AEE18F83AFDEB23
24 changed files with 450 additions and 346 deletions
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9
Python/traceback.c
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@ -1224,6 +1224,15 @@ dump_traceback(int fd, PyThreadState *tstate, int write_header)
if (frame == NULL) {
break;
}
if (frame->owner == FRAME_OWNED_BY_CSTACK) {
/* Trampoline frame */
frame = frame->previous;
}
if (frame == NULL) {
break;
}
/* Can't have more than one shim frame in a row */
assert(frame->owner != FRAME_OWNED_BY_CSTACK);
depth++;
}
}