From: Jens Axboe <jens.axboe@oracle.com>
Date: Fri, 5 Dec 2008 12:17:16 +0000 (+0100)
Subject: Fix bogus 'may be used uninitialized' warning from older gcc versions
X-Git-Tag: fio-1.24~35
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=dbad30b097de39d355b3952a3bb6db9ccf9dd77f;hp=b0ea08ce4ed567d3dff372f0866d5c3fbf1f8c39

Fix bogus 'may be used uninitialized' warning from older gcc versions

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

diff --git a/io_u.c b/io_u.c
index 8863fa74..f2406e8c 100644
--- a/io_u.c
+++ b/io_u.c
@@ -882,7 +882,11 @@ void io_u_log_error(struct thread_data *td, struct io_u *io_u)
 static void io_completed(struct thread_data *td, struct io_u *io_u,
 			 struct io_completion_data *icd)
 {
-	unsigned long usec;
+	/*
+	 * Older gcc's are too dumb to realize that usec is always used
+	 * initialized, silence that warning.
+	 */
+	unsigned long uninitialized_var(usec);
 
 	dprint_io_u(io_u, "io complete");