trace: Check return value to suppress compiler warning

trace.c: In function ‘get_prog_name’: trace.c:741: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result
git-mirror · Apr 26, 2010 · 3a2d9ff · 3a2d9ff
1 parent 37be183
commit 3a2d9ff
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/util/cairo-trace/trace.c b/util/cairo-trace/trace.c
@@ -738,8 +738,11 @@ get_prog_name (char *buf, int length)
 
     file = fopen ("/proc/self/cmdline", "rb");
     if (file != NULL) {
-	fgets (buf, length, file);
+	slash = fgets (buf, length, file);
 	fclose (file);
+
+	if (slash == NULL)
+	    return;
     } else {
 	char const *name = getenv ("CAIRO_TRACE_PROG_NAME");
 	if (name != NULL) {