From 3a2d9ffe0333090bb31ff01048ed506595f20cf9 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Mon, 26 Apr 2010 18:17:49 +0100
Subject: [PATCH] trace: Check return value to suppress compiler warning
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trace.c: In function ‘get_prog_name’:
trace.c:741: warning: ignoring return value of ‘fgets’, declared with
attribute warn_unused_result
---
 util/cairo-trace/trace.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/util/cairo-trace/trace.c b/util/cairo-trace/trace.c
index d577c5510..2dd6e2520 100644
--- 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) {