check fuel after host function call

crates/core/src/fuel.rs

@@ -334,4 +334,20 @@ impl Fuel {
         self.consume_fuel_unchecked(f(&self.costs))?;
         Ok(())
     }
+
+    /// Traps if fuel is depleted and fuel metering is enabled.
+    ///
+    /// # Note
+    ///
+    /// This does nothing if fuel metering is disabled.
+    ///
+    /// # Errors
+    ///
+    /// - If fuel is 0 and fuel metering is enabled.
+    pub fn trap_if_out_of_fuel_if_enabled(&self) -> Result<(), FuelError> {
+        if self.enabled && self.remaining == 0 {
+            return Err(FuelError::out_of_fuel(0));
+        }
+        Ok(())
+    }
 }

crates/wasmi/src/engine/executor/instrs/call.rs

@@ -447,7 +447,9 @@ impl Executor<'_> {
             }
             FuncEntity::Host(host_func) => {
                 let host_func = *host_func;
-                self.execute_host_func::<C>(store, results, func, host_func)
+                let res = self.execute_host_func::<C>(store, results, func, host_func)?;
+                store.inner_mut().fuel_mut().trap_if_out_of_fuel_if_enabled()?;
+                Ok(res)
             }
         }
     }