From 233f0b95ca3a0d1dcbd70bc7e519069a8e10d23e Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Wed, 3 Jun 2009 21:48:40 +0200
Subject: [PATCH] perf_counter tools: Work around warnings in older GCCs
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GCC 4.1.2 produces:
util/parse-options.c: In function ‘get_value’:
util/parse-options.c:36: warning: ‘arg’ may be used uninitialized in this function
builtin-top.c: In function ‘display_thread’:
builtin-top.c:178: warning: ‘printed’ may be used uninitialized in this function
Annotate them away by initializing these variables to 0.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
Documentation/perf_counter/builtin-top.c | 2 +-
Documentation/perf_counter/util/parse-options.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/perf_counter/builtin-top.c b/Documentation/perf_counter/builtin-top.c
index 16a618446d3f..7c907e25d82b 100644
--- a/Documentation/perf_counter/builtin-top.c
+++ b/Documentation/perf_counter/builtin-top.c
@@ -175,7 +175,7 @@ static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se)
static void print_sym_table(void)
{
- int printed, j;
+ int printed = 0, j;
int counter;
float events_per_sec = events/delay_secs;
float kevents_per_sec = (events-userspace_events)/delay_secs;
diff --git a/Documentation/perf_counter/util/parse-options.c b/Documentation/perf_counter/util/parse-options.c
index b80abd9a99bc..551b6bc34e79 100644
--- a/Documentation/perf_counter/util/parse-options.c
+++ b/Documentation/perf_counter/util/parse-options.c
@@ -33,7 +33,7 @@ static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt,
static int get_value(struct parse_opt_ctx_t *p,
const struct option *opt, int flags)
{
- const char *s, *arg;
+ const char *s, *arg = NULL;
const int unset = flags & OPT_UNSET;
if (unset && p->opt)
--
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