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Author SHA1 Message Date
Chris Fallin
a0646c8d3f Account for duplicated if-block params on end op in unreachable case. 
This is a close analogue to bnjbvr@'s fix in commit 518b7a7e. Similar to
that fix, this PR fixes a bug in which the Wasm translator could
misalign its value stack and either mistranslate or cause a panic with a
type-checking error.

Found via fuzzing by :decoder in SpiderMonkey (bug 1664453).
 2020-09-14 16:41:53 -07:00