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-rw-r--r--sql/sql_analyse.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/sql_analyse.cc b/sql/sql_analyse.cc
index 96525822c52..de367e8c052 100644
--- a/sql/sql_analyse.cc
+++ b/sql/sql_analyse.cc
@@ -359,7 +359,8 @@ void field_real::add()
else
{
#ifdef HAVE_SNPRINTF
- snprintf(buff, sizeof(buff), "%-.*f", (int) decs, num);
+ buff[sizeof(buff)-1]=0; // Safety
+ snprintf(buff, sizeof(buff)-1, "%-.*f", (int) decs, num);
#else
sprintf(buff, "%-.*f", (int) decs, num);
#endif