2 files changed, 7 insertions, 2 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index d0d54233da7..9b19ce7b96a 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,10 @@
+2012-07-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * alloc.c (mark_object): Remove "#ifdef GC_CHECK_MARKED_OBJECTS"
+        wrapper that is not needed because the wrapped code is a no-op (zero
+        machine instructions) when GC_CHECK_MARKED_OBJECTS is not defined.
+        This avoids a -Wunused-macros diagnostic with GCC 4.7.1 x86-64.
+
 2012-07-02  Dmitry Antipov  <dmantipov@yandex.ru>
 
         * alloc.c (mark_buffer): Simplify.  Remove prototype.
diff --git a/src/alloc.c b/src/alloc.c
index b059d6c04a6..b0945aa30de 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -5924,10 +5924,8 @@ mark_object (Lisp_Object arg)
         else
           pvectype = 0;
 
-#ifdef GC_CHECK_MARKED_OBJECTS
         if (pvectype != PVEC_SUBR && pvectype != PVEC_BUFFER)
           CHECK_LIVE (live_vector_p);
-#endif /* GC_CHECK_MARKED_OBJECTS */
 
         if (pvectype == PVEC_BUFFER)
           {