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LibC: Support backwards copy in memmove().

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This commit is contained in:
Andreas Kling 2019-01-23 08:31:23 +01:00
parent 84c4110a50
commit c7ded89f05
1 changed files with 6 additions and 2 deletions
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8
LibC/string.cpp
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@ -141,8 +141,12 @@ void* memmove(void* dest, const void* src, size_t n)
{ {
if (dest < src) if (dest < src)
return memcpy(dest, src, n); return memcpy(dest, src, n);
// FIXME: Implement backwards copy.
assert(false); byte *pd = (byte*)dest;
const byte *ps = (const byte*)src;
for (pd += n, ps += n; n--;)
*--pd = *--ps;
return dest;
} }
char* strcpy(char* dest, const char *src) char* strcpy(char* dest, const char *src)