diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 77b133784a0..1952f78c3b9 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2010-02-11  Richard Guenther  <rguenther@suse.de>
+
+	PR driver/43021
+	* gcc.c (process_command): Handle LTO file@offset case more
+	appropriately.
+
 2010-02-11  Jakub Jelinek  <jakub@redhat.com>
 
 	* reload1.c (eliminate_regs_1): If insn is DEBUG_INSN, avoid any
diff --git a/gcc/gcc.c b/gcc/gcc.c
index 2e219d614e9..31e4ab37513 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -4575,20 +4575,35 @@ process_command (int argc, const char **argv)
 	}
       else
 	{
-          const char *p = strchr (argv[i], '@');
+          const char *p = strrchr (argv[i], '@');
           char *fname;
+	  long offset;
+	  int consumed;
 #ifdef HAVE_TARGET_OBJECT_SUFFIX
 	  argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
 #endif
-          if (!p)
-            fname = xstrdup (argv[i]);
-          else
-            {
+	  /* For LTO static archive support we handle input file
+	     specifications that are composed of a filename and
+	     an offset like FNAME@OFFSET.  */
+	  if (p
+	      && p != argv[i]
+	      && sscanf (p, "@%li%n", &offset, &consumed) >= 1
+	      && strlen (p) == (unsigned int)consumed)
+	    {
               fname = (char *)xmalloc (p - argv[i] + 1);
               memcpy (fname, argv[i], p - argv[i]);
               fname[p - argv[i]] = '\0';
-            }
-
+	      /* Only accept non-stdin and existing FNAME parts, otherwise
+		 try with the full name.  */
+	      if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
+		{
+		  free (fname);
+		  fname = xstrdup (argv[i]);
+		}
+	    }
+	  else
+	    fname = xstrdup (argv[i]);
+ 
           if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
             {
               perror_with_name (fname);
diff --git a/gcc/lto/ChangeLog b/gcc/lto/ChangeLog
index a726d32f5bb..58e51231bf1 100644
--- a/gcc/lto/ChangeLog
+++ b/gcc/lto/ChangeLog
@@ -1,3 +1,9 @@
+2010-02-11  Richard Guenther  <rguenther@suse.de>
+
+	PR driver/43021
+	* lto-elf.c (lto_elf_file_open): Handle file@offset case more
+	appropriately.
+
 2010-01-11  Andy Hutchinson  <hutchinsonandy@gcc.gnu.org>
 
 	* lto.c (O_BINARY): Define.
diff --git a/gcc/lto/lto-elf.c b/gcc/lto/lto-elf.c
index b70648d4680..356e5139536 100644
--- a/gcc/lto/lto-elf.c
+++ b/gcc/lto/lto-elf.c
@@ -550,35 +550,33 @@ lto_elf_file_open (const char *filename, bool writable)
   lto_elf_file *elf_file;
   lto_file *result = NULL;
   off_t offset;
+  long loffset;
   off_t header_offset;
   const char *offset_p;
   char *fname;
+  int consumed;
 
-  offset_p = strchr (filename, '@');
-  if (!offset_p)
+  offset_p = strrchr (filename, '@');
+  if (offset_p
+      && offset_p != filename
+      && sscanf (offset_p, "@%li%n", &loffset, &consumed) >= 1
+      && strlen (offset_p) == (unsigned int)consumed)
     {
-      fname = xstrdup (filename);
-      offset = 0;
-      header_offset = 0;
-    }
-  else
-    {
-      /* The file started with '@' is a file containing command line
-	 options.  Stop if it doesn't exist.  */
-      if (offset_p == filename)
-	fatal_error ("command line option file '%s' does not exist",
-		     filename);
-
       fname = (char *) xmalloc (offset_p - filename + 1);
       memcpy (fname, filename, offset_p - filename);
       fname[offset_p - filename] = '\0';
-      offset_p += 3; /* skip the @0x */
-      offset = lto_parse_hex (offset_p);
+      offset = (off_t)loffset;
       /* elf_rand expects the offset to point to the ar header, not the
          object itself. Subtract the size of the ar header (60 bytes).
          We don't uses sizeof (struct ar_hd) to avoid including ar.h */
       header_offset = offset - 60;
     }
+  else
+    {
+      fname = xstrdup (filename);
+      offset = 0;
+      header_offset = 0;
+    }
 
   /* Set up.  */
   elf_file = XCNEW (lto_elf_file);