Forgot to add stpcpy.c in last commit

include/stddef.h

@@ -48,16 +48,20 @@
 /* The <stddef.h> header shall define the following macros:
  *
  * NULL
- *   The Null pointer constant.
+ *   The null pointer constant.
  *
- *   NOTE: Currently the definition of NULL is in sys/types.h but should be
- *   moved here sometime.
+ *     NOTE: Currently the definition of NULL is in sys/types.h but should
+ *     be moved here sometime.
  *
  * offsetof(type, member-designator)
  *   Integer constant expression of type size_t, the value of which is the
  *   offset in bytes to the structure member (member-designator), from the
  *   beginning of its structure (type).
  *
+ *     NOTE: This version of offsetof() depends on behaviors that could be
+ *     undefined for some compilers.  It would be better to use a builtin
+ *     function if one exists.
+ *
  * Reference: Opengroup.org
  */
 
@@ -71,6 +75,9 @@
  * ptrdiff_t
  *   Signed integer type of the result of subtracting two pointers.
  *
+ *     NOTE: This type assumes that ssize_t will cover the largest address
+ *     difference.  This might not be true of CONFIG_MM_SMALL is defined.
+ *
  * wchar_t
  *   Integer type whose range of values can represent distinct wide-character
  *   codes for all members of the largest character set specified among the
@@ -82,8 +89,8 @@
  * size_t
  *   Unsigned integer type of the result of the sizeof operator.
  *
- *   NOTE: Currently the type definitions of both wchar_t and size_t are in
- *   sys/types.h but should be moved here sometime.
+ *     NOTE: Currently the type definitions of both wchar_t and size_t are
+ *     in sys/types.h but should be moved here sometime.
  *
  * The implementation shall support one or more programming environments in
  * which the widths of ptrdiff_t, size_t, and wchar_t are no greater than the

include/sys/types.h

@@ -56,6 +56,7 @@
 #ifndef TRUE
 #  define TRUE  1
 #endif
+
 #ifndef FALSE
 #  define FALSE 0
 #endif
@@ -129,6 +130,8 @@ typedef unsigned int mode_t;
 
 /* size_t is used for sizes of memory objects.
  * ssize_t is used for a count of bytes or an error indication.
+ *
+ * REVISIT: size_t belongs in stddef.h
  */
 
 #ifdef CONFIG_SMALL_MEMORY
@@ -179,6 +182,8 @@ typedef intptr_t     ptrdiff_t;
 /* Wide, 16-bit character types.  wchar_t is a built-in type in C++ and
  * its declaration here may cause compilation errors on some compilers
  * if -DCONFIG_WCHAR_BUILTIN is not included in the CXXFLAGS.
+ *
+ * REVISIT: wchar_t belongs in stddef.h
  */
 
 #ifndef CONFIG_WCHAR_BUILTIN

libc/string/lib_stpcpy.c

@@ -0,0 +1,67 @@
+/************************************************************************
+ * libc/string/lib_strppy.c
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************/
+
+/************************************************************************
+ * Included Files
+ ************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <string.h>
+
+/************************************************************************
+ * Public Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Name: stpcpy
+ *
+ * Description:
+ *   Copies the string pointed to by 'src' (including the terminating NUL
+ *   character) into the array pointed to by 'dest'.
+ *
+ * Returned value:
+ *   The stpcpy() function returns a pointer to the terminating NUL
+ *   character copied into the 'dest' buffer
+ *
+ ************************************************************************/
+
+#ifndef CONFIG_ARCH_STPCPY
+FAR char *stpcpy(FAR char *dest, FAR const char *src)
+{
+  while ((*dest++ = *src++) != '\0');
+  return --dest;
+}
+#endif