From f85a5071ca50b168c509ed66c31516e1d28193c4 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Thu, 17 Feb 2011 14:40:46 -0200
Subject: [PATCH] --- yaml --- r: 234453 b: refs/heads/master c:
 74cfc17dc1a69c37ce6c8a76c1ce84bcb796eb0e h: refs/heads/master i:   234451:
 7de29005807ef2f8106235e1023d83300bdf2856 v: v3

---
 [refs]                            | 2 +-
 trunk/tools/perf/builtin-report.c | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index d864ed00b2ec..7d0eb6b180d1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 712a4b6049724278121d56aba683151d86c8c35a
+refs/heads/master: 74cfc17dc1a69c37ce6c8a76c1ce84bcb796eb0e
diff --git a/trunk/tools/perf/builtin-report.c b/trunk/tools/perf/builtin-report.c
index f9a99a1ce609..dddcc7ea2bec 100644
--- a/trunk/tools/perf/builtin-report.c
+++ b/trunk/tools/perf/builtin-report.c
@@ -350,6 +350,12 @@ static int __cmd_report(void)
 		perf_session__fprintf_dsos(session, stdout);
 
 	next = rb_first(&session->hists_tree);
+
+	if (next == NULL) {
+		ui__warning("The %s file has no samples!\n", input_name);
+		goto out_delete;
+	}
+
 	while (next) {
 		struct hists *hists;