Suppress false 'unused argument' warnings for GCC v3

* cord/cordxtra.c (CORD_ATTR_UNUSED): Use 'unused' attribute starting from GCC v3.4 (instead of v4.0). * include/private/gc_priv.h (GC_ATTR_UNUSED): Likewise.
ivmai · Feb 27, 2012 · da8cf49 · da8cf49
1 parent e3bfd10
commit da8cf49
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diff --git a/cord/cordxtra.c b/cord/cordxtra.c
@@ -63,7 +63,7 @@ typedef void (* oom_fn)(void);
               ABORT("Out of memory\n"); }
 # define ABORT(msg) { fprintf(stderr, "%s\n", msg); abort(); }
 
-#if __GNUC__ >= 4
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
 # define CORD_ATTR_UNUSED __attribute__((__unused__))
 #else
 # define CORD_ATTR_UNUSED /* empty */

diff --git a/include/private/gc_priv.h b/include/private/gc_priv.h
@@ -130,7 +130,7 @@ typedef char * ptr_t;   /* A generic pointer to which we can add        */
 #endif
 
 #ifndef GC_ATTR_UNUSED
-# if __GNUC__ >= 4
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
 #   define GC_ATTR_UNUSED __attribute__((__unused__))
 # else
 #   define GC_ATTR_UNUSED /* empty */