X-Git-Url: https://vcs.fsf.org/?p=exim.git;a=blobdiff_plain;f=src%2Fsrc%2Fexim.h;h=e979175d178dfc50af2a8908f1444edb747a02f1;hp=566324ba2e61d0da275cc356c0595e7175f24266;hb=52ba4661114d0a96c15f5f43bcb97ce89061f1b6;hpb=5901f0abfe16545a81e820cd9816e830287776a7

diff --git a/src/src/exim.h b/src/src/exim.h
index 566324ba2..e979175d1 100644
--- a/src/src/exim.h
+++ b/src/src/exim.h
@@ -477,13 +477,15 @@ requires various things that are set therein. */
 #endif
 
 /* Define a union to hold either an IPv4 or an IPv6 sockaddr structure; this
-simplifies some of the coding. */
+simplifies some of the coding.  We include the sockaddr to reduce type-punning
+issues in C99. */
 
 union sockaddr_46 {
   struct sockaddr_in v4;
   #if HAVE_IPV6
   struct sockaddr_in6 v6;
   #endif
+  struct sockaddr v0;
 };
 
 /* If SUPPORT_TLS is not defined, ensure that USE_GNUTLS is also not defined