1 files changed, 3 insertions, 0 deletions
diff --git a/gc.h b/gc.h
index a8070012..cf53f272 100644
--- a/gc.h
+++ b/gc.h
@@ -55,3 +55,6 @@ extern val break_obj;
 #define gc_hint(var) gc_hint_func(&var)
 #define REACHABLE 0x100
 #define FREE      0x200
+
+INLINE val zap(volatile val *loc) { val ret = *loc; *loc = nil; return ret; }
+#define z(lvalue) zap(&lvalue)