Check __x86_64__ for FPU state

	PR sanitizer/59018
	* sanitizer_common/sanitizer_platform_limits_posix.cc
	(struct_user_fpxregs_struct_sz): Initialize to 0 if __x86_64__ is
	defined.

From-SVN: r204483

libsanitizer/ChangeLog

 2013-11-05  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR sanitizer/59018
+	* sanitizer_common/sanitizer_platform_limits_posix.cc
+	(struct_user_fpxregs_struct_sz): Initialize to 0 if __x86_64__ is
+	defined.
+
+2013-11-05  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR sanitizer/59018
 	* sanitizer_common/sanitizer_platform_limits_linux.cc
 	(struct_kernel_stat64_sz): Initialize to 0 if __x86_64__ is
 	defined.

libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc

@@ -191,7 +191,7 @@ namespace __sanitizer {
       (defined(__i386) || defined (__x86_64))  // NOLINT
   unsigned struct_user_regs_struct_sz = sizeof(struct user_regs_struct);
   unsigned struct_user_fpregs_struct_sz = sizeof(struct user_fpregs_struct);
-#if __WORDSIZE == 64
+#ifdef __x86_64
   unsigned struct_user_fpxregs_struct_sz = 0;
 #else
   unsigned struct_user_fpxregs_struct_sz = sizeof(struct user_fpxregs_struct);