8548 want memset_s(3C)
Reviewed by: Robert Mustacchi <rm@joyent.com>

*** 82,92 ****
   *                      compiler that complies with ISO/IEC 9899:1999, other-
   *                      wise known as the C99 standard.
   *
   * _STDC_C11            Like _STDC_C99 except that the value of __STDC_VERSION__
   *                      is 201112L indicating a compiler that compiles with
!  *                      ISO/IEXC 9899:2011, otherwise known as the C11 standard.
   *
   * _STRICT_SYMBOLS      Used in cases where symbol visibility is restricted
   *                      by the standards, and the user has not explicitly
   *                      relaxed the strictness via __EXTENSIONS__.
   */
--- 82,92 ----
   *                      compiler that complies with ISO/IEC 9899:1999, other-
   *                      wise known as the C99 standard.
   *
   * _STDC_C11            Like _STDC_C99 except that the value of __STDC_VERSION__
   *                      is 201112L indicating a compiler that compiles with
!  *                      ISO/IEC 9899:2011, otherwise known as the C11 standard.
   *
   * _STRICT_SYMBOLS      Used in cases where symbol visibility is restricted
   *                      by the standards, and the user has not explicitly
   *                      relaxed the strictness via __EXTENSIONS__.
   */
*** 434,444 ****
--- 434,459 ----
  #define _NORETURN_KYWD  _Noreturn
  #else
  #define _NORETURN_KYWD
  #endif
  
+ /* ISO/IEC 9899:2011 Annex K */
+ #if !defined(_STRICT_SYMBOLS)
+ #define __EXT1_VISIBLE  1
+ #else
+ #define __EXT1_VISIBLE  0
+ #endif
  
+ #if defined(__STDC_WANT_LIB_EXT1__)
+ #undef  __EXT1_VISIBLE
+ #if __STDC_WANT_LIB_EXT1__
+ #define __EXT1_VISIBLE          1
+ #else
+ #define __EXT1_VISIBLE          0
+ #endif
+ #endif /* __STDC_WANT_LIB_EXT1__ */
+ 
  /*
   * The following macro indicates header support for the ANSI C++
   * standard.  The ISO/IEC designation for this is ISO/IEC FDIS 14882.
   */
  #define _ISO_CPP_14882_1998
*** 448,463 ****
   * ISO/IEC 9899:1999, Programming Languages - C.
   */
  #define _ISO_C_9899_1999
  
  /*
!  * The following macro indicates header support for the C99 standard,
   * ISO/IEC 9899:2011, Programming Languages - C.
   */
  #define _ISO_C_9899_2011
  
  /*
   * The following macro indicates header support for DTrace. The value is an
   * integer that corresponds to the major version number for DTrace.
   */
  #define _DTRACE_VERSION 1
  
--- 463,484 ----
   * ISO/IEC 9899:1999, Programming Languages - C.
   */
  #define _ISO_C_9899_1999
  
  /*
!  * The following macro indicates header support for the C11 standard,
   * ISO/IEC 9899:2011, Programming Languages - C.
   */
  #define _ISO_C_9899_2011
  
  /*
+  * The following macro indicates header support for the C11 standard,
+  * ISO/IEC 9899:2011 Annex K, Programming Languages - C.
+  */
+ #undef  __STDC_LIB_EXT1__
+ 
+ /*
   * The following macro indicates header support for DTrace. The value is an
   * integer that corresponds to the major version number for DTrace.
   */
  #define _DTRACE_VERSION 1