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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 that memmove correctly copies text from one buffer
** to another even when the buffers overlap.
**
**
**==========================================================================*/
#include <palsuite.h>
int __cdecl main(int argc, char **argv)
{
char testA[11] = "abcdefghij";
char testB[15] = "aabbccddeeffgg";
char testC[15] = "aabbccddeeffgg";
char testD[15] = "aabbccddeeffgg";
char insString[3] = "zzz";
char *retVal;
if (PAL_Initialize(argc, argv))
{
return FAIL;
}
/* move a string onto itself */
retVal = (char *)memmove(testA + 2, testA, 8);
if (retVal != testA + 2)
{
Fail("The return value should have been the value of the destination"
"pointer, but wasn't\n");
}
/*Check the most likely error*/
if (memcmp(testA, "ababababab", 11) == 0)
{
Fail("memmove should have saved the characters in the region of"
" overlap between source and destination, but didn't.\n");
}
if (memcmp(testA, "ababcdefgh", 11) != 0)
{
/* not sure what exactly went wrong. */
Fail("memmove was called on a region containing the characters"
" \"abcdefghij\". It was to move the first 8 positions to"
" the last 8 positions, giving the result \"ababcdefgh\". "
" Instead, it gave the result \"%s\".\n", testA);
}
/* move a string to the front of testB */
retVal = (char *)memmove(testB, insString, 3);
if(retVal != testB)
{
Fail("memmove: The function did not return the correct "
"string.\n");
}
if(memcmp(testB, "zzzbccddeeffgg",15) != 0)
{
Fail("memmove: The function failed to move the string "
"correctly.\n");
}
/* move a string to the middle of testC */
retVal = memmove(testC+5, insString, 3);
if(retVal != testC+5)
{
Fail("memmove: The function did not return the correct "
"string.\n");
}
if(memcmp(testC, "aabbczzzeeffgg",15) != 0)
{
Fail("memmove: The function failed to move the string "
"correctly.\n");
}
/* move a string to the end of testD */
retVal = memmove(testD+11, insString, 3);
if(retVal != testD+11)
{
Fail("memmove: The function did not return the correct "
"string.\n");
}
if(memcmp(testD, "aabbccddeefzzz",15) != 0)
{
Fail("memmove: The function failed to move the string "
"correctly.\n");
}
PAL_Terminate();
return PASS;
}
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