Linux 2.6 - man page for strcat (linux section 3posix)
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STRCAT(P) POSIX Programmer's Manual STRCAT(P)
strcat - concatenate two strings
char *strcat(char *restrict s1, const char *restrict s2);
The strcat() function shall append a copy of the string pointed to by s2 (including the
terminating null byte) to the end of the string pointed to by s1. The initial byte of s2
overwrites the null byte at the end of s1. If copying takes place between objects that
overlap, the behavior is undefined.
The strcat() function shall return s1; no return value is reserved to indicate an error.
No errors are defined.
The following sections are informative.
This issue is aligned with the ISO C standard; this does not affect compatibility with
XPG3 applications. Reliable error detection by this function was never guaranteed.
strncat() , the Base Definitions volume of IEEE Std 1003.1-2001, <string.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE Std
1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System
Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and The Open Group
Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 STRCAT(P)
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