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bpo-38249: Expand Py_UNREACHABLE() to __builtin_unreachable() in the release mode. (GH-16329)

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Co-authored-by: Victor Stinner <vstinner@python.org>
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Serhiy Storchaka 2020-03-09 20:49:52 +02:00 • committed by GitHub
parent 6d0ee60740
commit eebaa9bfc5
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8 changed files with 39 additions and 15 deletions
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6
Python/peephole.c
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@ -511,8 +511,12 @@ PyCode_Optimize(PyObject *code, PyObject* consts, PyObject *names,
if (instrsize(j) > ilen) {
goto exitUnchanged;
}
assert(ilen <= INT_MAX);
/* If instrsize(j) < ilen, we'll emit EXTENDED_ARG 0 */
if (ilen > 4) {
/* Can only happen when PyCode_Optimize() is called with
malformed bytecode. */
goto exitUnchanged;
}
write_op_arg(codestr + h, opcode, j, (int)ilen);
h += ilen;
}