use freopen() correctly

1 files changed, 7 insertions, 2 deletions

diff --git a/uxd.c b/uxd.c
index 1e81ac1..35dd2aa 100644
--- a/uxd.c
+++ b/uxd.c
@@ -191,8 +191,13 @@ void version(void) {
 
 void open_input(const char *arg) {
 	if(!arg || (strcmp(arg, "-") == 0)) {
-		input = stdin;
-		freopen(NULL, "rb", stdin);
+		input = freopen(NULL, "rb", stdin);
+		if(!input) {
+			/* can this ever happen? */
+			fprintf(stderr, "%s: ", self);
+			perror("<stdin>");
+			exit(1);
+		}
 	} else {
 		input = fopen(arg, "rb");
 		if(!input) {