Clear errno before call to strtol(3).

Since strtol(3) doesn't clear errno on success, anything that sets errno prior to this call will make it look like the call failed. This happens when built with ASAN. Signed-off-by: Dan Albert <[email protected]> Acked-by: Steve Lawrence <[email protected]>
SELinuxProject · Dec 11, 2014 · b1bbd30 · b1bbd30
1 parent 823ebc8
commit b1bbd30
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/checkpolicy/checkpolicy.c b/checkpolicy/checkpolicy.c
@@ -456,7 +456,9 @@ int main(int argc, char **argv)
 			mlspol = 1;
 			break;
 		case 'c':{
-				long int n = strtol(optarg, NULL, 10);
+				long int n;
+				errno = 0;
+				n = strtol(optarg, NULL, 10);
 				if (errno) {
 					fprintf(stderr,
 						"Invalid policyvers specified: %s\n",