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moved the results cap check in callCFunction

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CPunch 2020-12-16 03:58:56 -06:00
parent eede892eb0
commit b2c1f73e01
1 changed files with 4 additions and 4 deletions
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src/cvm.c
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@ -117,14 +117,14 @@ static inline void callCFunction(CState *state, CosmoCFunction cfunc, int args,
int nres = cfunc(state, args, savedBase + 1); int nres = cfunc(state, args, savedBase + 1);
cosmoM_unfreezeGC(state); cosmoM_unfreezeGC(state);
// remember where the return values are if (nres > nresults) // caller function wasn't expecting this many return values, cap it
nres = nresults;
// remember where the return values are
CValue* results = cosmoV_getTop(state, nres-1); CValue* results = cosmoV_getTop(state, nres-1);
state->top = savedBase + offset; // set stack state->top = savedBase + offset; // set stack
if (nres > nresults) // caller function wasn't expecting this many return values, cap it
nres = nresults;
// push the return value back onto the stack // push the return value back onto the stack
memcpy(state->top, results, sizeof(CValue) * nres); // copies the return values to the top of the stack memcpy(state->top, results, sizeof(CValue) * nres); // copies the return values to the top of the stack
state->top += nres; // and make sure to move state->top to match state->top += nres; // and make sure to move state->top to match