commit cdf20aaf0a8b39a1f1ee427570a717f1c44ba272
Author: brobecke <brobecke@f8352e7e-cb20-0410-8ce7-b5d9e71c585c>
Date:   Wed Dec 30 10:28:08 2009 +0000

            Work around a -Wunused warning when glibc is too old.
            * cp-namespace.c (cp_lookup_transparent_type_loop): Add cast to
            void in function return to avoid a compiler warning.
    
    
diff --git a/gdb/cp-namespace.c b/gdb/cp-namespace.c
index a7a387b..35bb36c 100644
--- a/gdb/cp-namespace.c
+++ b/gdb/cp-namespace.c
@@ -539,7 +539,10 @@ cp_lookup_transparent_type_loop (const char *name, const char *scope,
 
   full_name = alloca (scope_length + 2 + strlen (name) + 1);
   strncpy (full_name, scope, scope_length);
-  strncpy (full_name + scope_length, "::", 2);
+  /* Cast to void the return value of the following strncpy to avoid
+     a -Wunused warning from GCC when the glibc is too old (observed
+     with a 2.3.2 libc, while everything was fine with a 2.4 glibc).  */
+  (void) strncpy (full_name + scope_length, "::", 2);
   strcpy (full_name + scope_length + 2, name);
 
   return basic_lookup_transparent_type (full_name);