tree d874eaa43ed713c45c8ac4e34cb5b2eb410a47a6
parent 9c8fb7a95075eb047ab75e702de52f68ff360f17
author Joe Tsai <joetsai@digital-static.net> 1522270009 -0700
committer GitHub <noreply@github.com> 1522270009 -0700
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proto: do not allow unknown fields to satisfy required field bit (#565)

A prior changed (see #511) allows Unmarshal to treat fields with
unknown wire types with known tags as unknown fields.
When doing so, we must be careful not to set the required field bit.

For example, suppose we have:
	message Foo { require fixed32 my_field = 1; }

Then parsing a message with a field of type varint and tag 1 should
not satisfy the required that Foo.my_field be set.