From: W.C.A. Wijngaards <wouter@nlnetlabs.nl>
Date: Tue, 19 Nov 2019 11:11:28 +0000 (+0100)
Subject: And check the buffer size precisely.
X-Git-Tag: release-1.9.6rc1~65
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a839a8ae01585c9fd57a6bc47edddbdc442a9dfc;p=thirdparty%2Funbound.git

And check the buffer size precisely.
---

diff --git a/dns64/dns64.c b/dns64/dns64.c
index 4b3c6cee5..1e38b8f0d 100644
--- a/dns64/dns64.c
+++ b/dns64/dns64.c
@@ -225,6 +225,7 @@ ipv4_to_ptr(uint32_t ipv4, char ptr[], size_t nm_len)
     static const char IPV4_PTR_SUFFIX[] = "\07in-addr\04arpa";
     int i;
     char* c = ptr;
+    log_assert(nm_len == MAX_PTR_QNAME_IPV4);
 
     for (i = 0; i < 4; ++i) {
         *c = uitoa((unsigned int)(ipv4 % 256), c + 1);