1 files changed, 6 insertions, 0 deletions
diff --git a/ace/OS.h b/ace/OS.h
index 393793e3a38..8b5c5342be5 100644
--- a/ace/OS.h
+++ b/ace/OS.h
@@ -153,6 +153,12 @@
 // GreenHills C++ 1.8.8 complains that the (a) expression has no effect.  But,
 // it doesn't complain about unused args, so don't bother with them.
 #define ACE_UNUSED_ARG(a)
+#elif defined (__GNUC__)
+// gcc 2.7.2 complains about unused args with -Wall, and complains
+// about "statement with no effect" with (a).  This eliminates the
+// warnings, and no code is generated for the null conditional
+// statement.
+#define ACE_UNUSED_ARG(a) {if (&a) /* null */ ;}
 #else
 #define ACE_UNUSED_ARG(a) (a)
 #endif /* ghs */