backport: tlink.c (recompile_files): Do not assume that "rename" can overwrite an existing file.

	Merge from csl-arm-branch.
	2004-02-12  Mark Mitchell  <mark@codesourcery.com>

	* tlink.c (recompile_files): Do not assume that "rename" can
	overwrite an existing file.

From-SVN: r97252

gcc/ChangeLog

+2005-03-31  Danny Smith  <dannysmith@users.sourceforge.net>
+
+	Merge from csl-arm-branch.
+	2004-02-12  Mark Mitchell  <mark@codesourcery.com>
+
+	* tlink.c (recompile_files): Do not assume that "rename" can
+	overwrite an existing file.
+
 2005-03-31  Paolo Bonzini  <bonzini@gnu.org>
 
 	* gcc/configure.ac (TL_AC_GNU_MAKE_GCC_LIB_PATH): Remove.

gcc/tlink.c

@@ -470,7 +470,13 @@ recompile_files (void)
 	}
       fclose (stream);
       fclose (output);
-      rename (outname, f->key);
+      /* On Windows "rename" returns -1 and sets ERRNO to EACCESS if
+	 the new file name already exists.  Therefore, we explicitly
+	 remove the old file first.  */
+      if (remove (f->key) == -1)
+	fatal_perror ("removing .rpo file");
+      if (rename (outname, f->key) == -1)
+	fatal_perror ("renaming .rpo file");
 
       if (!f->args)
 	{