[subset] Raise the bar in new vs old table size
https://crbug.com/oss-fuzz/16740 This is actually an interesting thing that {h,v}mtx allocates as much as a font pretends to have glyphs but the solution is not that obvious as regular fonts can have less than actually containing metrics in their {h,v}mtx. This change raises the bar to consider this hmtx 4 byte for every glyph case. Initially we wanted to just find things allocating crazy amount of memory but having the assert has led to interesting findings also so let's don't remove the assert and see what we can find elsewhere.
This commit is contained in:
parent
2f8e823331
commit
269a120f13
@ -92,8 +92,8 @@ _subset2 (hb_subset_plan_t *plan)
|
||||
bool needed = table->subset (&c);
|
||||
if (serializer.ran_out_of_room)
|
||||
{
|
||||
assert (buf_size <= (source_blob->length + plan->num_output_glyphs ()) * 16 + 4096);
|
||||
buf_size += (buf_size >> 1) + 32;
|
||||
assert (buf_size <= source_blob->length * 16 + 4096);
|
||||
DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c ran out of room; reallocating to %u bytes.", HB_UNTAG (tag), buf_size);
|
||||
if (unlikely (!buf.alloc (buf_size)))
|
||||
{
|
||||
|
Binary file not shown.
Loading…
Reference in New Issue
Block a user