Add a workaround for the HOST_NOT_FOUND symbol conflicts

As suggested by Szilárd Pfeiffer in Bug #529496
* tests/giomm_ioerror/main.cc: add a test for this

svn path=/trunk/; revision=735

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/giomm_ioerror/main.cc b/tests/giomm_ioerror/main.cc
index f1ebf33f..e8c76b70 100644
--- a/tests/giomm_ioerror/main.cc
+++ b/tests/giomm_ioerror/main.cc
@@ -1,7 +1,19 @@
+// Some libraries define HOST_NOT_FOUND.  Make sure we can still compile fine
+// even if this is the case:
+#define HOST_NOT_FOUND 1
+
 #include <giomm.h>
 #include <iostream>
 #include <string.h>
 
+// This is just to test a workaround in the error.h header.  We save and #undef
+// HOST_NOT_FOUND if it was defined by another header, and then restore it at
+// the end of the header.  Here I'm just making sure that our temporary value
+// doesn't remain set
+#ifdef GIOMM_SAVED_HOST_NOT_FOUND
+#error Forgot to #undef GIOMM_SAVED_HOST_NOT_FOUND
+#endif
+
 int main(int argc, char** argv)
 {
   Glib::init();