9a1b8522354471c0c9c366e6f0347e213534e9b6
hiram
  Wed Nov 25 11:56:46 2015 -0800
fixup gcc warnings for -Wunused-but-set-variable refs #16121

diff --git src/inc/common.mk src/inc/common.mk
index c7603bb..561b53b 100644
--- src/inc/common.mk
+++ src/inc/common.mk
@@ -305,31 +305,31 @@
   endif
 endif
 
 SYS = $(shell uname -s)
 
 ifeq (${HG_WARN},)
   ifeq (${SYS},Darwin)
       HG_WARN = -Wall -Wno-unused-variable -Wno-deprecated-declarations
       HG_WARN_UNINIT=
   else
     ifeq (${SYS},SunOS)
       HG_WARN = -Wall -Wformat -Wimplicit -Wreturn-type
       HG_WARN_UNINIT=-Wuninitialized
     else
       ifeq (${FULLWARN},hgwdev)
-        HG_WARN = -Wall -Werror -Wformat -Wformat-security -Wimplicit -Wreturn-type -Wempty-body
+        HG_WARN = -Wall -Werror -Wformat -Wformat-security -Wimplicit -Wreturn-type -Wempty-body -Wunused-but-set-variable
         HG_WARN_UNINIT=-Wuninitialized
       else
         HG_WARN = -Wall -Wformat -Wimplicit -Wreturn-type
         HG_WARN_UNINIT=-Wuninitialized
       endif
     endif
   endif
   # -Wuninitialized generates a warning without optimization
   ifeq ($(findstring -O,${COPT}),-O)
      HG_WARN += ${HG_WARN_UNINIT}
   endif
 endif
 
 # this is to hack around many make files not including HG_WARN in
 # the link line