diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 97e1bbcd3..6c313cde7 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,9 @@
+2003-02-22  Christopher Faylor  <cgf@redhat.com>
+
+	* cygmalloc.h: Remove MORECORE_CANNOT_TRIM.  It's not true.
+	# cygwin.din: Export mallinfo.
+	# malloc_wrapper.cc (mallinfo): New function.
+
 2003-02-22  Pierre Humblet  <pierre.humblet@ieee.org>
 
 	* syslog.cc (syslog): Do not print the Windows pid.  Print the Cygwin
diff --git a/winsup/cygwin/cygmalloc.h b/winsup/cygwin/cygmalloc.h
index 2c1bbde42..3d3a0acd5 100644
--- a/winsup/cygwin/cygmalloc.h
+++ b/winsup/cygwin/cygmalloc.h
@@ -21,7 +21,6 @@ extern "C" void dlmalloc_stats ();
 
 #ifndef __INSIDE_CYGWIN__
 # define USE_DL_PREFIX 1
-# define MORECORE_CANNOT_TRIM 1
 #else
 # define __malloc_lock() mallock->acquire ()
 # define __malloc_unlock() mallock->release ()
diff --git a/winsup/cygwin/cygwin.din b/winsup/cygwin/cygwin.din
index a2dd26674..80b58f067 100644
--- a/winsup/cygwin/cygwin.din
+++ b/winsup/cygwin/cygwin.din
@@ -768,6 +768,7 @@ _lseek = lseek
 lseek64
 lstat64
 mallinfo
+mallinfo
 malloc
 _malloc = malloc
 malloc_stats
diff --git a/winsup/cygwin/malloc_wrapper.cc b/winsup/cygwin/malloc_wrapper.cc
index bd671a6fc..14db2fd79 100644
--- a/winsup/cygwin/malloc_wrapper.cc
+++ b/winsup/cygwin/malloc_wrapper.cc
@@ -25,6 +25,8 @@ details. */
 #include "sync.h"
 #include "perprocess.h"
 #include "cygmalloc.h"
+#include <malloc.h>
+extern "C" struct mallinfo dlmallinfo ();
 
 /* we provide these stubs to call into a user's
    provided malloc if there is one - otherwise
@@ -276,6 +278,22 @@ malloc_stats ()
   return;
 }
 
+extern "C" struct mallinfo
+mallinfo ()
+{
+  struct mallinfo m;
+  if (!use_internal_malloc)
+    set_errno (ENOSYS);
+  else
+    {
+      __malloc_lock ();
+      m = dlmallinfo ();
+      __malloc_unlock ();
+    }
+
+  return m;
+}
+
 extern "C" char *
 strdup (const char *s)
 {