X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=libgc%2Fmark_rts.c;h=4074879a71aa90d1f8e638b9ce7521573939bfb4;hb=115fc0608b4322042314e934aac6e89e0c9ad2b9;hp=55eb5d5433953dd860281be12e0d9c90205f9ec9;hpb=6a1600a60f806f0dd77f0c2e8deb6101bef408fe;p=mono.git

diff --git a/libgc/mark_rts.c b/libgc/mark_rts.c
index 55eb5d54339..4074879a71a 100644
--- a/libgc/mark_rts.c
+++ b/libgc/mark_rts.c
@@ -368,8 +368,11 @@ ptr_t p;
 
 ptr_t GC_approx_sp()
 {
-    word dummy;
+    VOLATILE word dummy;
 
+    dummy = 42;	/* Force stack to grow if necessary.	Otherwise the	*/
+    		/* later accesses might cause the kernel to think we're	*/
+    		/* doing something wrong.				*/
 #   ifdef _MSC_VER
 #     pragma warning(disable:4172)
 #   endif