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-rw-r--r--winsup/cygwin/heap.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/winsup/cygwin/heap.h b/winsup/cygwin/heap.h
index 96046cbb9..ce16e1333 100644
--- a/winsup/cygwin/heap.h
+++ b/winsup/cygwin/heap.h
@@ -14,4 +14,6 @@ details. */
void heap_init ();
void malloc_init ();
-#define inheap(s) (brk && ((char *) (s) >= (char *) brkbase) && ((char *) (s) <= (char *) brktop))
+#define inheap(s) \
+ (cygheap->heapptr && ((char *) (s) >= (char *) cygheap->heapbase) \
+ && ((char *) (s) <= (char *) cygheap->heaptop))