mirrors/FreeRDP
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix xcrush-divideByZero (when src ==dst)

Browse Source
This commit is contained in:
Mihai Radu 2022-12-07 15:47:14 +02:00 committed by akallabeth
parent d768796163
commit 2bc13d50a3
1 changed files with 1 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
libfreerdp/codec/xcrush.c
View File

@ -754,31 +754,10 @@ static int xcrush_generate_output(XCRUSH_CONTEXT* xcrush, BYTE* OutputBuffer, UI
static INLINE size_t xcrush_copy_bytes(BYTE* dst, const BYTE* src, size_t num)
{
size_t diff, rest, end, a;
WINPR_ASSERT(dst);
WINPR_ASSERT(src);
if (src + num < dst || src > dst + num)
{
memcpy(dst, src, num);
}
else
{
// src and dst overlaps
// we should copy the area that doesn't overlap repeatly
diff = (dst > src) ? dst - src : src - dst;
rest = num % diff;
end = num - rest;
for (a = 0; a < end; a += diff)
{
memcpy(&dst[a], &src[a], diff);
}
if (rest != 0)
memcpy(&dst[end], &src[end], rest);
}
memmove(dst, src, num);
return num;
}