Fix type inference error reported in #43064. #46302
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N5N3
added
types and dispatch
N5N3
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vtjnash
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Aug 10, 2022
vtjnash
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Aug 10, 2022
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`R` is always false here.
DilumAluthge
removed
the
merge me
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This PR fixes the subtype bug reported in #43064.
Before this PR,
exists_subtypewould erase the under-processing value inenvoutifsubtypereturnfalse, but we should actually keep it as the nextsubtype_unionallneeds it to check whether we have assigned a (different) environment value. 7c76a97 skips the erasing if there are remaing Runions to test.(#41096 is still broken, as the root cause looks different)