re PR target/66523 (the new clang-based assembler in Xcode 7 on 10.11 fails on…

re PR target/66523 (the new clang-based assembler in Xcode 7 on 10.11 fails on libobjc/NXConstStr.m)

2015-07-08  Iain Sandoe  <iain@codesourcery.com>

	PR target/66523
	* config/darwin.c (darwin_mark_decl_preserved): Exclude 'L' label names from
	preservation.

From-SVN: r225565

gcc/ChangeLog

+2015-07-08  Iain Sandoe  <iain@codesourcery.com>
+
+	PR target/66523
+	* config/darwin.c (darwin_mark_decl_preserved): Exclude 'L' label names from
+	preservation.
+
 2015-07-08  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR middle-end/66334

gcc/config/darwin.c

@@ -1229,6 +1229,11 @@ darwin_encode_section_info (tree decl, rtx rtl, int first ATTRIBUTE_UNUSED)
 void
 darwin_mark_decl_preserved (const char *name)
 {
+  /* Actually we shouldn't mark any local symbol this way, but for now
+     this only happens with ObjC meta-data.  */
+  if (darwin_label_is_anonymous_local_objc_name (name))
+    return;
+
   fprintf (asm_out_file, "\t.no_dead_strip ");
   assemble_name (asm_out_file, name);
   fputc ('\n', asm_out_file);