diff --git a/config/ChangeLog b/config/ChangeLog
index 793e4d263b9..6f27566974d 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,8 @@
+2014-11-17  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR bootstrap/63888
+	* bootstrap-asan.mk (ASAN_OPTIONS): Export "detect_leaks=0".
+
 2014-11-13  Kirill Yukhin  <kirill.yukhin@intel.com>
 
 	* target-posix: New file.
diff --git a/config/bootstrap-asan.mk b/config/bootstrap-asan.mk
index fbef02125dc..52ef30e99c8 100644
--- a/config/bootstrap-asan.mk
+++ b/config/bootstrap-asan.mk
@@ -1,5 +1,8 @@
 # This option enables -fsanitize=address for stage2 and stage3.
 
+# Suppress LeakSanitizer in bootstrap.
+export ASAN_OPTIONS="detect_leaks=0"
+
 STAGE2_CFLAGS += -fsanitize=address
 STAGE3_CFLAGS += -fsanitize=address
 POSTSTAGE1_LDFLAGS += -fsanitize=address -static-libasan \