[systemd-commits] src/bootchart

[Thomas H.P. Andersen]

 src/bootchart/svg.c |    2 ++
 1 file changed, 2 insertions(+)

New commits:
commit 8271bd16ce9327834d8580e55bb5e4e0896fd98a
Author: Thomas Hindoe Paaboel Andersen <phomes at gmail.com>
Date:   Wed Jun 18 23:35:01 2014 +0200

    bootchart: add assert
    
    since 376cd3b89c62f580a6f576cecfbbb28d3944118f LIST_FIND_TAIL accepts
    an empty list. That removed an assert in LIST_FIND_TAIL and we now
    theoretically risk a null pointer deref. This adds the assert directly
    to protect against that.

diff --git a/src/bootchart/svg.c b/src/bootchart/svg.c
index 8121199..bf6636c 100644
--- a/src/bootchart/svg.c
+++ b/src/bootchart/svg.c
@@ -80,6 +80,8 @@ static void svg_header(void) {
         double h;
         struct list_sample_data *sampledata_last;
 
+        assert(head);
+
         sampledata = head;
         LIST_FIND_TAIL(link, sampledata, head);
         sampledata_last = head;