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Use def_path_hash_to_def_id when re-using a RawDefId - #79915
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Fixesrust-lang#79890 Previously, we just copied a `RawDefId` from the 'old' map to the 'new' map. However, the `RawDefId` for a given `DefPathHash` may be different in the current compilation session. Using `def_path_hash_to_def_id` ensures that the `RawDefId` we use is valid in the current session.
rust-highfive
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Dec 10, 2020
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r? @lcnr (rust-highfive has picked a reviewer for you, use r? to override) |
lcnr
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Dec 10, 2020
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don't know enough about this r? @petrochenkov maybe |
petrochenkov
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Dec 10, 2020
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@bors r+ |
bors
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Dec 10, 2020
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📌 Commit 3918b82 has been approved by |
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Dec 10, 2020
…sh, r=petrochenkov Use `def_path_hash_to_def_id` when re-using a `RawDefId` Fixesrust-lang#79890 Previously, we just copied a `RawDefId` from the 'old' map to the 'new' map. However, the `RawDefId` for a given `DefPathHash` may be different in the current compilation session. Using `def_path_hash_to_def_id` ensures that the `RawDefId` we use is valid in the current session.
bors
commented
Dec 11, 2020
Collaborator
bors
commented
Dec 11, 2020
Collaborator
☀️ Test successful - checks-actions |
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rylev
commented
Dec 15, 2020
Member
Following up on #79721 this also seems to have performance issues (albeit with the clap benchmark showing improvement). |
rylev
commented
Dec 15, 2020
Member
Given @wesleywiser's comment on #79721, it seems like regressions here are totally acceptable. |
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Fixes#79890
Previously, we just copied a
RawDefIdfrom the 'old' map to the 'new'map. However, the
RawDefIdfor a givenDefPathHashmay be differentin the current compilation session. Using
def_path_hash_to_def_idensures that the
RawDefIdwe use is valid in the current session.