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Check for empty message type before incrementing required_field_index.

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If you have a message that defined as empty, but attempt to decode a
message that has one or more unknown fields then pb_decode fails. The
method used to count the number of required fields counts 1 required
field because the default type of PB_LAST_FIELD is PB_HTYPE_REQUIRED.
This commit is contained in:
Kent Ryhorchuk
2013-07-15 18:04:47 -07:00
committed by Petteri Aimonen
parent a01856f4ab
commit 3c10e6fa71
1 changed files with 3 additions and 3 deletions
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6
pb_decode.c
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@@ -308,12 +308,12 @@ static bool pb_field_next(pb_field_iterator_t *iter)
prev_size *= iter->pos->array_size;
}
if (PB_HTYPE(iter->pos->type) == PB_HTYPE_REQUIRED)
iter->required_field_index++;
if (iter->pos->tag == 0)
return false; /* Only happens with empty message types */
if (PB_HTYPE(iter->pos->type) == PB_HTYPE_REQUIRED)
iter->required_field_index++;
iter->pos++;
iter->field_index++;
if (iter->pos->tag == 0)