Prevent Potential Subtraction Overflow

xuhuanzy · xuhuanzy · commit 0d2c7588fb0f · 2025-10-09T15:51:23.000+08:00
diff --git a/crates/emmylua_code_analysis/src/semantic/infer/infer_table.rs b/crates/emmylua_code_analysis/src/semantic/infer/infer_table.rs
@@ -251,7 +251,7 @@ fn infer_table_type_by_calleee(
             call_arg_number += 1;
         }
         (true, false) => {
-            call_arg_number -= 1;
+            call_arg_number = call_arg_number.saturating_sub(1);
         }
     }
     let typ = param_types

Original file line number	Diff line number	Diff line change
`@@ -251,7 +251,7 @@ fn infer_table_type_by_calleee(`
`251`	`251`	`call_arg_number += 1;`
`252`	`252`	`}`
`253`	`253`	`(true, false) => {`
`254`		`- call_arg_number -= 1;`
	`254`	`+ call_arg_number = call_arg_number.saturating_sub(1);`
`255`	`255`	`}`
`256`	`256`	`}`
`257`	`257`	`let typ = param_types`