1 files changed, 2 insertions, 2 deletions

diff --git a/src/gmalloc.c b/src/gmalloc.c
index 20ffe5f605f..47046cc6747 100644
--- a/src/gmalloc.c
+++ b/src/gmalloc.c
@@ -75,11 +75,11 @@ extern void emacs_abort (void);
 #ifdef CYGWIN
 extern void *bss_sbrk (ptrdiff_t size);
 extern int bss_sbrk_did_unexec;
-extern void *bss_sbrk_buffer_beg;
+extern char bss_sbrk_buffer[];
 extern void *bss_sbrk_buffer_end;
 #define DUMPED bss_sbrk_did_unexec
 #define ALLOCATED_BEFORE_DUMPING(P) \
-  ((P) < bss_sbrk_buffer_end && (P) >= bss_sbrk_buffer_beg)
+  ((P) < bss_sbrk_buffer_end && (P) >= (void *) bss_sbrk_buffer)
 #endif
 
 #ifdef  __cplusplus