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detect stack overflows

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CPunch
2021-01-01 19:20:24 -06:00
parent 84f7895684
commit 509823e1bc
4 changed files with 49 additions and 28 deletions
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9
src/cvm.c
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@@ -18,6 +18,7 @@ COSMO_API void cosmoV_pushFString(CState *state, const char *format, ...) {
void cosmoV_error(CState *state, const char *format, ...) {
if (state->panic)
return;
state->panic = true;
// print stack trace
for (int i = 0; i < state->frameCount; i++) {
@@ -50,8 +51,7 @@ void cosmoV_error(CState *state, const char *format, ...) {
va_end(args);
printf("%.*s\n", errString->length, errString->str);
cosmoV_printStack(state);
state->panic = true;
//cosmoV_printStack(state);
}
CObjUpval *captureUpvalue(CState *state, CValue *local) {
@@ -90,6 +90,11 @@ void closeUpvalues(CState *state, CValue *local) {
}
void pushCallFrame(CState *state, CObjClosure *closure, int args) {
if (state->frameCount >= FRAME_MAX) {
cosmoV_error(state, "Callframe overflow!");
return;
}
CCallFrame *frame = &state->callFrame[state->frameCount++];
frame->base = state->top - args - 1; // - 1 for the function
frame->pc = closure->function->chunk.buf;