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m[vector] Recover vector from error in .reset()

This commit is contained in:
Behdad Esfahbod 2020-06-28 20:59:01 -07:00
parent 5e76ddf54d
commit f9d101e747
1 changed files with 8 additions and 3 deletions
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11
src/hb-vector.hh
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@ -80,7 +80,12 @@ struct hb_vector_t
fini ();
}
void reset () { resize (0); }
void reset ()
{
if (unlikely (in_error ()))
allocated = length; // Big hack!
resize (0);
}
hb_vector_t& operator = (const hb_vector_t &o)
{
@ -181,7 +186,7 @@ struct hb_vector_t
/* Allocate for size but don't adjust length. */
bool alloc (unsigned int size)
{
if (unlikely (allocated < 0))
if (unlikely (in_error ()))
return false;
if (likely (size <= (unsigned) allocated))
@ -195,7 +200,7 @@ struct hb_vector_t
Type *new_array = nullptr;
bool overflows =
(int) new_allocated < 0 ||
(int) in_error () ||
(new_allocated < (unsigned) allocated) ||
hb_unsigned_mul_overflows (new_allocated, sizeof (Type));
if (likely (!overflows))