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Potential Vulnerability in Cloned Code #585

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Potential Vulnerability in Cloned Code #585

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6 changes: 4 additions & 2 deletions tmp/c-old/src/buffer/sds.c
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Original file line number Diff line number Diff line change
Expand Up @@ -224,7 +224,7 @@ sds sdsMakeRoomFor(sds s, size_t addlen)
{
void *sh, *newsh;
size_t avail = sdsavail(s);
size_t len, newlen;
size_t len, newlen, reqlen;
char type, oldtype = s[-1] & SDS_TYPE_MASK;
int hdrlen;

Expand All @@ -234,7 +234,8 @@ sds sdsMakeRoomFor(sds s, size_t addlen)

len = sdslen(s);
sh = (char *)s - sdsHdrSize(oldtype);
newlen = (len + addlen);
reqlen = newlen = (len + addlen);
assert(newlen > len); /* Catch size_t overflow */
if (newlen < SDS_MAX_PREALLOC)
newlen *= 2;
else
Expand All @@ -249,6 +250,7 @@ sds sdsMakeRoomFor(sds s, size_t addlen)
type = SDS_TYPE_8;

hdrlen = sdsHdrSize(type);
assert(hdrlen + newlen + 1 > reqlen); /* Catch size_t overflow */
if (oldtype == type)
{
newsh = s_realloc(sh, hdrlen + newlen + 1);
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