diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d8c5125c17cb..7f024889c463 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2010-09-24  Iain Sandoe  <iains@gcc.gnu.org>
+	    Dominique Dhumieres  <dominiq@lps.ens.fr>
+	    
+	PR bootstrap/45751
+	* gcc/config/darwin-driver.c (darwin_default_min_version):
+	Adjust size passed to memcpy in two places.
+	
 2010-09-24  Richard Guenther  <rguenther@suse.de>
 
 	* c-decl.c (pop_scope): Always set file-scope DECL_CONTEXT.
diff --git a/gcc/config/darwin-driver.c b/gcc/config/darwin-driver.c
index 099226c25d32..1123aa37c438 100644
--- a/gcc/config/darwin-driver.c
+++ b/gcc/config/darwin-driver.c
@@ -76,7 +76,7 @@ darwin_default_min_version (unsigned int *decoded_options_count,
 	generate_option (OPT_mmacosx_version_min_, macosx_deployment_target,
 			 1, CL_DRIVER, &(*decoded_options)[1]);
 	memcpy (*decoded_options + 2, argv + 1,
-		(argc - 1) * sizeof (struct cl_decoded_option *));
+		(argc - 1) * sizeof (struct cl_decoded_option));
 	return;
       }
   }
@@ -128,7 +128,7 @@ darwin_default_min_version (unsigned int *decoded_options_count,
   generate_option (OPT_mmacosx_version_min_, new_flag,
 		   1, CL_DRIVER, &(*decoded_options)[1]);
   memcpy (*decoded_options + 2, argv + 1,
-	  (argc - 1) * sizeof (struct cl_decoded_option *));
+	  (argc - 1) * sizeof (struct cl_decoded_option));
   return;
   
  parse_failed: