patch 7.4.2068
Problem: Not all arguments of trunc_string() are tested. Memory access
error when running the message tests.
Solution: Add another test case. (Yegappan Lakshmanan) Make it easy to run
unittests with valgrind. Fix the access error.
diff --git a/src/message.c b/src/message.c
index fe72e43..7aec2d6 100644
--- a/src/message.c
+++ b/src/message.c
@@ -298,9 +298,9 @@
{
do
half = half - (*mb_head_off)(s, s + half - 1) - 1;
- while (utf_iscomposing(utf_ptr2char(s + half)) && half > 0);
+ while (half > 0 && utf_iscomposing(utf_ptr2char(s + half)));
n = ptr2cells(s + half);
- if (len + n > room)
+ if (len + n > room || half == 0)
break;
len += n;
i = half;