To fix a bug that caused assertion failure in ares_strerror:

	* src/NameResolver.cc (callback): Fixed the bug.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/NameResolver.cc b/src/NameResolver.cc
index d9d124c8..dc048549 100644
--- a/src/NameResolver.cc
+++ b/src/NameResolver.cc
@@ -23,6 +23,15 @@
 
 void callback(void* arg, int status, struct hostent* host) {
   NameResolver* resolverPtr = (NameResolver*)arg;
+#ifdef HAVE_LIBARES
+  // This block is required since the assertion in ares_strerror fails
+  // if status = ARES_EDESTRUCTION is passed to ares_strerror as 1st argument.
+  // This does not happen in c-ares.
+  if(status == ARES_EDESTRUCTION) {
+    // we simply return in this case.
+    return;
+  }
+#endif
   if(status != ARES_SUCCESS) {
 #ifdef HAVE_LIBCARES
     resolverPtr->error = ares_strerror(status);