Make runtest more resilient to setup problems

[exim.git] / src / src / exim.h

diff --git a/src/src/exim.h b/src/src/exim.h
index 566324ba2e61d0da275cc356c0595e7175f24266..a45ea0b30433a613353488cf5e7db27e661c34cb 100644 (file)
--- a/src/src/exim.h
+++ b/src/src/exim.h
@@ -48,6 +48,11 @@ making unique names. */
 #define LOCALHOST_MAX  10
 #endif
 
+/* If not overriden by os.h, dynamic libraries have filenames ending .so */
+#ifndef DYNLIB_FN_EXT
+# define DYNLIB_FN_EXT "so"
+#endif
+
 /* ANSI C standard includes */
 
 #include <ctype.h>
@@ -477,13 +482,15 @@ 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