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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*============================================================================
**
** Source: test1.c
**
** Purpose:
** Test to see that you can copy a portion of a string into a new buffer.
** Also check that the strncpy function doesn't overflow when it is used.
** Finally check that if the number of characters given is greater than the
** amount to copy, that the destination buffer is padded with NULLs.
**
**
**==========================================================================*/
#include <palsuite.h>
int __cdecl main(int argc, char *argv[])
{
char dest[80];
char *result = "foobar";
char *str = "foobar\0baz";
char *ret;
int i;
if (PAL_Initialize(argc, argv))
{
return FAIL;
}
for (i=0; i<80; i++)
{
dest[i] = 'x';
}
ret = strncpy(dest, str, 3);
if (ret != dest)
{
Fail("Expected strncpy to return %p, got %p!\n", dest, ret);
}
if (strncmp(dest, result, 3) != 0)
{
Fail("Expected strncpy to give \"%s\", got \"%s\"!\n", result, dest);
}
if (dest[3] != 'x')
{
Fail("strncpy overflowed!\n");
}
ret = strncpy(dest, str, 40);
if (ret != dest)
{
Fail("Expected strncpy to return %p, got %p!\n", dest, ret);
}
if (strcmp(dest, result) != 0)
{
Fail("Expected strncpy to give \"%s\", got \"%s\"!\n", result, dest);
}
for (i=strlen(str); i<40; i++)
{
if (dest[i] != 0)
{
Fail("strncpy failed to pad the destination with NULLs!\n");
}
}
if (dest[40] != 'x')
{
Fail("strncpy overflowed!\n");
}
PAL_Terminate();
return PASS;
}
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