From mboxrd@z Thu Jan  1 00:00:00 1970
From: Patrick Leslie Polzer <leslie.polzer@gmx.net>
Subject: wcscat problem
Date: Thu, 19 Jan 2006 16:38:00 +0100
Message-ID: <20060119163800.1b45d984.leslie.polzer@gmx.net>
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Hello list,

why does wcscat not work like strcat does?
It seems to be leaving the null byte in (C99 source):


#define _GNU_SOURCE
#include <wchar.h>


int main (int ac, char** av)
{
        wchar_t* ws =3D malloc(8);
        wcscpy(ws, (wchar_t*)"abc");
        wcscat(ws, (wchar_t*)"def");
        printf("%s/%s\n", ws, (void*)ws+4); /* "abc/def" [*] */


        char* s =3D malloc(8);
        strcpy(s, "abc");
        strcat(s, "def");
        printf("%s/%s\n", s, s+4); /* "abcdef/ef" */

        return 0;
}

Why is this?  I also noticed the compiler (gcc4) takes "string steps"
when performing pointer arithmetics with wchar_t pointers, that's why
I needed to cast to void* in line [*].

Leslie


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