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gh-113297: Fix segfault in compiler for with statement with 19 context managers (#113327)

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Irit Katriel 2023-12-22 01:50:26 +00:00 • committed by GitHub
parent 9afb0e1606
commit c31943af16
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3 changed files with 29 additions and 1 deletions
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Python/flowgraph.c
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@ -648,7 +648,7 @@ mark_except_handlers(basicblock *entryblock) {
struct _PyCfgExceptStack {
basicblock *handlers[CO_MAXBLOCKS+1];
basicblock *handlers[CO_MAXBLOCKS+2];
int depth;
};
@ -661,6 +661,7 @@ push_except_block(struct _PyCfgExceptStack *stack, cfg_instr *setup) {
if (opcode == SETUP_WITH || opcode == SETUP_CLEANUP) {
target->b_preserve_lasti = 1;
}
assert(stack->depth <= CO_MAXBLOCKS);
stack->handlers[++stack->depth] = target;
return target;
}