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From: "howarth at bromo dot med.uc.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/64883] FAIL: 17_intro/headers/c++*/all_attributes.cc (test for excess errors) on x86_64-apple-darwin14
Date: Sat, 31 Jan 2015 22:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64883

--- Comment #11 from howarth at bromo dot med.uc.edu ---
What is so dangerous about just using...

Index: fixincludes/inclhack.def
===================================================================
--- fixincludes/inclhack.def    (revision 220306)
+++ fixincludes/inclhack.def    (working copy)
@@ -1266,6 +1266,18 @@ fix = {
 };

 /*
+ * sys/cdef.sh on Darwin should use reserved name __noreturn__
+ * rather than noreturn.
+ */
+fix = {
+  hackname  = darwin_noreturn;
+  mach      = "*-*-darwin*";
+  files     = sys/cdefs.h;
+  sed       = "s/__attribute__((noreturn))/__attribute__((__noreturn__))/g";
+  test_text = "__attribute__((noreturn))";
+};
+
+/*
  *  __private_extern__ doesn't exist in FSF GCC.  Even if it did,
  *  why would you ever put it in a system header file?
  */

...instead? It seems a whole lot simpler.