X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=obfusc.c;h=dc0656c20e4fc4ab19d2b8bb826af0306b0a894d;hb=b5a5298a9d30720d2c8ffd7453d460791d19071d;hp=0db8aee867f89ee4726faf2c32a9f7d088c39e0c;hpb=ec38952c4c8e924c1c89ad5b934c6b8e70ce4102;p=sgt-puzzles.git

diff --git a/obfusc.c b/obfusc.c
index 0db8aee..dc0656c 100644
--- a/obfusc.c
+++ b/obfusc.c
@@ -114,7 +114,11 @@ int main(int argc, char **argv)
     obfuscate_bitmap(data, datalen * 8, decode);
 
     if (outputmode == BINARY) {
-	fwrite(data, 1, datalen, stdout);
+	int ret = fwrite(data, 1, datalen, stdout);
+        if (ret < 0) {
+            fprintf(stderr, "obfusc: write: %s\n", strerror(errno));
+            return 1;
+        }
     } else {
 	int i;
 	for (i = 0; i < datalen; i++)