diff --git a/sdcc-2.9.0-r5476-fix-doublefree.diff b/sdcc-2.9.0-r5476-fix-doublefree.diff
new file mode 100644
index 0000000..ab69503
--- /dev/null
+++ b/sdcc-2.9.0-r5476-fix-doublefree.diff
@@ -0,0 +1,20 @@
+--- trunk/sdcc/as/link/lkar.c	2009/07/18 08:25:57	5475
++++ trunk/sdcc/as/link/lkar.c	2009/07/18 09:11:36	5476
+@@ -454,8 +454,6 @@
+         {
+           long moduleOffset = ftell (libfp);
+ 
+-          free (obj_name);
+-
+           /* Opened OK - create a new libraryfile object for it */
+           if (This == NULL)
+             {
+@@ -484,7 +482,7 @@
+ 
+           add_rel_index (libfp, hdr.ar_size, This);
+ 
+-          fseek (libfp, moduleOffset + hdr.ar_size + (hdr.ar_size & 1), SEEK_SET);
++          fseek (libfp, moduleOffset + hdr.ar_size + (hdr.ar_size & 1), SEEK_SET);;
+         }
+     }
+ 
diff --git a/sdcc.spec b/sdcc.spec
index 6dca8b6..5cb8c61 100644
--- a/sdcc.spec
+++ b/sdcc.spec
@@ -1,6 +1,6 @@
 Name:           sdcc
 Version:        2.9.0
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Small Device C Compiler
 Group:          Applications/Engineering
 License:        GPLv2+
@@ -9,8 +9,7 @@ Source0:        http://downloads.sourceforge.net/sdcc/sdcc-src-%{version}.tar.bz
 Source1:        README.fedora
 Patch0:         sdcc-2.9.0-patch-out-getline.diff
 Patch1:         sdcc-2.9.0-configure.diff
-#Patch1:         sdcc-2.8.0-debugger-makefile.diff
-#Patch2:         sdcc-2.8.0-doc-lyx.diff
+Patch2:         sdcc-2.9.0-r5476-fix-doublefree.diff
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildRequires:  autoconf
@@ -56,8 +55,7 @@ Emacs extensions for SDCC.
 %setup -q -n sdcc
 %patch0 -p1
 %patch1 -p1
-#%%patch1 -p0
-#%%patch2 -p1
+%patch2 -p2
 find -name '*.[ch]' -exec chmod -x '{}' \;
 
 # Extract %%__os_install_post into os_install_post~
@@ -137,6 +135,9 @@ rm -rf $RPM_BUILD_ROOT
 
 
 %changelog
+* Mon Jul 20 2009 Conrad Meyer <konrad@tylerc.org> - 2.9.0-3
+- Fix double-free (rhbz# 509278) with patch from upstream.
+
 * Wed Jul 1 2009 Conrad Meyer <konrad@tylerc.org> - 2.9.0-2
 - Fix #454205 by BR'ing gputils and re-adding install_post hack.