diff --git a/boehm-gc/ChangeLog b/boehm-gc/ChangeLog
index 2c090961542..1866aa0a37b 100644
--- a/boehm-gc/ChangeLog
+++ b/boehm-gc/ChangeLog
@@ -1,3 +1,8 @@
+1999-04-16  Tom Tromey  <tromey@cygnus.com>
+
+	* config.h (__start): Declare as `int' in alpha/OSF1 case.  From
+	David Pettersson <dapet@mai.liu.se>
+
 1999-04-14  Tom Tromey  <tromey@cygnus.com>
 
 	* configure: Rebuilt.
diff --git a/boehm-gc/config.h b/boehm-gc/config.h
index 0ab5a1fef32..6aaf5032c78 100644
--- a/boehm-gc/config.h
+++ b/boehm-gc/config.h
@@ -833,7 +833,7 @@
 	/* Normally HEURISTIC2 is too conervative, since		*/
 	/* the text segment immediately follows the stack.		*/
 	/* Hence we give an upper pound.				*/
-    	extern __start;
+    	extern int __start;
 #   	define HEURISTIC2_LIMIT ((ptr_t)((word)(&__start) & ~(getpagesize()-1)))
 #   	define CPP_WORDSZ 64
 #   	define MPROTECT_VDB