Use the XPG 4.2 versions of the networking APIs in Solaris.

Those, unlike the default versions, comply with the Single UNIX
Specification, meaning they are able to detect truncation of datagrams
when received with recvmsg().

1 files changed, 7 insertions, 0 deletions

diff --git a/ftmacros.h b/ftmacros.h
index 19b9fb43..8e319493 100644
--- a/ftmacros.h
+++ b/ftmacros.h
@@ -49,6 +49,13 @@
  */
 #if defined(sun) || defined(__sun)
   #define __EXTENSIONS__
+
+  /*
+   * We also need to define _XPG4_2 in order to get
+   * the Single UNIX Specification version of
+   * recvmsg().
+   */
+  #define _XPG4_2
 #elif defined(_hpux) || defined(hpux) || defined(__hpux)
   #define _REENTRANT
 #elif defined(__linux__) || defined(linux) || defined(__linux)