env: Check unsetenv() return value

./env -u "" foo and ./env -u "A=123" foo should both fail.
2015-11-06 10:51:04 +00:00 · 2015-11-06 10:51:04 +00:00 · b553349251
parent 1b32732887
commit b553349251
1 changed files with 2 additions and 1 deletions
--- a/env.c
+++ b/env.c
@ -25,7 +25,8 @@ main(int argc, char *argv[])
 		*environ = NULL;
 		break;
 	case 'u':
-		unsetenv(EARGF(usage()));
+		if (unsetenv(EARGF(usage())) < 0)
+			eprintf("unsetenv:");
 		break;
 	default:
 		usage();