From: Ralph Corderoy <ralph@inputplus.co.uk>
Date: Sun, 30 Oct 2016 15:55:30 +0000 (+0000)
Subject: Clarify trunccpy()'s src and dest must not overlap.
X-Git-Url: https://diplodocus.org/git/nmh/commitdiff_plain/d92cb917ebcd7e8e1b78ec2e9e1ad2ae1ef8e8e4?hp=b9ba14bab3f9eb123457f98bcc090b823ab6bc85

Clarify trunccpy()'s src and dest must not overlap.
---

diff --git a/sbr/utils.c b/sbr/utils.c
index ca809439..78ec2da9 100644
--- a/sbr/utils.c
+++ b/sbr/utils.c
@@ -346,9 +346,9 @@ nmh_strcasestr (const char *s1, const char *s2) {
 }
 
 
-/* truncpy copies at most size - 1 chars from non-NULL src to non-NULL
- * dst, and ensures dst is NUL terminated.  If size is zero then it
- * aborts as dst cannot be NUL terminated.
+/* truncpy copies at most size - 1 chars from non-NULL src to non-NULL,
+ * non-overlapping, dst, and ensures dst is NUL terminated.  If size is
+ * zero then it aborts as dst cannot be NUL terminated.
  *
  * It's to be used when truncation is intended and correct, e.g.
  * reporting a possibly very long external string back to the user.  One