Relay msvcrt_memcpy to memmove, CString::Insert seems to rely on that

behaviour. Add a test case.

dlls/msvcrt/msvcrt.spec

@@ -666,7 +666,7 @@
 @ cdecl mbtowc(wstr str long) MSVCRT_mbtowc
 @ cdecl memchr(ptr long long)
 @ cdecl memcmp(ptr ptr long)
-@ cdecl memcpy(ptr ptr long)
+@ cdecl memcpy(ptr ptr long) memmove
 @ cdecl memmove(ptr ptr long)
 @ cdecl memset(ptr long long)
 @ cdecl mktime(ptr) MSVCRT_mktime

dlls/msvcrt/tests/.cvsignore

@@ -3,4 +3,5 @@ cpp.ok
 file.ok
 heap.ok
 scanf.ok
+string.ok
 testlist.c

dlls/msvcrt/tests/Makefile.in

@@ -10,7 +10,8 @@ CTESTS = \
 	cpp.c \
 	file.c \
 	heap.c \
-	scanf.c 
+	scanf.c \
+	string.c 
 
 @MAKE_TEST_RULES@
 

dlls/msvcrt/tests/string.c

@@ -0,0 +1,51 @@
+/*
+ * Unit test suite for string functions.
+ *
+ * Copyright 2004 Uwe Bonnes
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "wine/test.h"
+#include "winbase.h"
+#include <string.h>
+#include <stdlib.h>
+
+static void* (*pmemcpy)(void *, const void *, size_t n);
+static int* (*pmemcmp)(void *, const void *, size_t n);
+
+#define SETNOFAIL(x,y) x = (void*)GetProcAddress(hMsvcrt,y)
+#define SET(x,y) SETNOFAIL(x,y); ok(x != NULL, "Export '%s' not found\n", y)
+
+
+START_TEST(string)
+{
+    void *mem;
+    char xilstring[]="c:/xilinx";
+    int nLen=strlen(xilstring);
+    HMODULE hMsvcrt = LoadLibraryA("msvcrt.dll");
+    ok(hMsvcrt != 0, "LoadLibraryA failed\n");
+    SET(pmemcpy,"memcpy");
+    SET(pmemcmp,"memcmp");
+
+    /* MSVCRT memcpy behaves like memmove for overlapping moves,
+       MFC42 CString::Insert seems to rely on that behaviour */
+    mem = malloc(100);
+    ok(mem != NULL, "memory not allocated for size 0\n");
+    strcpy((char*)mem,xilstring);
+    pmemcpy((char*)mem+5, mem,nLen+1);
+    ok(pmemcmp((char*)mem+5,xilstring, nLen) == 0, 
+       "Got result %s\n",(char*)mem+5);
+}