From patchwork Thu Nov  1 19:54:02 2012
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Subject: Poison loc_t in system.h
From: David Edelsohn <dje.gcc@gmail.com>
X-Patchwork-Id: 196372
Message-Id: <CAGWvnykGgy+cbG25Ekk+VUOMMER3PtvpAgA4A=vUNY9cvdqX2w@mail.gmail.com>
To: Richard Biener <richard.guenther@gmail.com>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>
Date: Thu, 1 Nov 2012 15:54:02 -0400

The name loc_t is too enticing for developers to avoid, but it
unfortunately conflicts with a visible symbol in an AIX header file,
which repeatedly causes conflicts.  This patch poisons the symbols in
GCC system.h to prevent developers from using it.

Bootstrapped on powerpc-ibm-aix7.1.0.0

Okay?

Thanks, David

        * system.h (loc_t): Poison.


Index: system.h
===================================================================
--- system.h    (revision 193045)
+++ system.h    (working copy)
@@ -774,6 +774,11 @@
 #undef strerror
  #pragma GCC poison strerror

+/* loc_t is defined on some systems and too inviting for some
+   programmers to avoid.  */
+#undef loc_t
+ #pragma GCC poison loc_t
+
 /* Old target macros that have moved to the target hooks structure.  */
  #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN                     \
        FUNCTION_PROLOGUE FUNCTION_EPILOGUE                             \