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[serialize] Copy both sides of the buffer

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This commit is contained in:
Behdad Esfahbod 2019-03-30 19:03:55 -07:00
parent 8512dc565d
commit 946d446f9b
1 changed files with 9 additions and 4 deletions
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13
src/hb-serialize.hh
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@ -249,13 +249,18 @@ struct hb_serialize_context_t
hb_bytes_t copy_bytes () const hb_bytes_t copy_bytes () const
{ {
assert (this->successful); assert (this->successful);
unsigned int len = this->head - this->start; /* Copy both items from head side and tail side... */
void *p = malloc (len); unsigned int len = (this->head - this->start)
+ (this->end - this->tail);
char *p = (char *) malloc (len);
if (p) if (p)
memcpy (p, this->start, len); {
memcpy (p, this->start, this->head - this->start);
memcpy (p + (this->head - this->start), this->tail, this->end - this->tail);
}
else else
return hb_bytes_t (); return hb_bytes_t ();
return hb_bytes_t ((char *) p, len); return hb_bytes_t (p, len);
} }
template <typename Type> template <typename Type>
Type *copy () const Type *copy () const