tree b4be5efcc1f85b2dc55f38a48ccf53e56d932188
parent 0a2b38d082a41a938328c9f453bc1e821726fbe2
author Steven Perron <stevenperron@google.com> 1576007910 -0500
committer GitHub <noreply@github.com> 1576007910 -0500
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Don't crash when folding construct of empty struct (#3092)

* Don't crash when folding construct of empty struct

An OpCompositeConstruct of an empty struct will be folded to a constant
under normal circumstances.  However, if the id limit has been reached
and the constant cannot be generated, then other folding rules will be
tried.

These rules do not handle the case of an empty struct.  We add allow it
to be handled.

Fixes http://crbug/1030194

* Changes based on the review.