fix(delegatecall): correct gas overflow check to use top+4 (#107)

wjmelements · claude · web-flow · commit c0df60ae1a90 · 2026-02-27T20:49:01.000-06:00
Co-authored-by: Claude Sonnet 4.6 &lt;noreply@anthropic.com&gt;
diff --git a/src/evm.c b/src/evm.c
@@ -1596,7 +1596,7 @@ static result_t doCall(context_t *callContext) {
                         OUT_OF_GAS;
                     }
                     callContext->gas -= gasCost;
-                    if (UPPER(UPPER_P(callContext->top + 5)) || LOWER(UPPER_P(callContext->top + 5)) || UPPER(LOWER_P(callContext->top + 5)) || gas > L(callContext->gas)) {
+                    if (UPPER(UPPER_P(callContext->top + 4)) || LOWER(UPPER_P(callContext->top + 4)) || UPPER(LOWER_P(callContext->top + 4)) || gas > L(callContext->gas)) {
                         gas = L(callContext->gas);
                     }
                     callContext->gas -= gas;

Original file line number	Diff line number	Diff line change
`@@ -1596,7 +1596,7 @@ static result_t doCall(context_t *callContext) {`
`1596`	`1596`	`OUT_OF_GAS;`
`1597`	`1597`	`}`
`1598`	`1598`	`callContext->gas -= gasCost;`
`1599`		`- if (UPPER(UPPER_P(callContext->top + 5)) \|\| LOWER(UPPER_P(callContext->top + 5)) \|\| UPPER(LOWER_P(callContext->top + 5)) \|\| gas > L(callContext->gas)) {`
	`1599`	`+ if (UPPER(UPPER_P(callContext->top + 4)) \|\| LOWER(UPPER_P(callContext->top + 4)) \|\| UPPER(LOWER_P(callContext->top + 4)) \|\| gas > L(callContext->gas)) {`
`1600`	`1600`	`gas = L(callContext->gas);`
`1601`	`1601`	`}`
`1602`	`1602`	`callContext->gas -= gas;`