Fix handling of const patterns #3262
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E.g. in `match x { None => ... }`, `None` is a path pattern (resolving to the
option variant), not a binding. To determine this, we need to try to resolve the
name during lowering. This isn't too hard since we already need to resolve names
for macro expansion anyway (though maybe a bit hacky).
Fixes rust-lang#1618.
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Heh, this is surprisingly straightforward! Much simpler than when I've tried to do this myself :) bors r+ |
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Feb 22, 2020
3262: Fix handling of const patterns r=matklad a=flodiebold
E.g. in `match x { None => ... }`, `None` is a path pattern (resolving to the
option variant), not a binding. To determine this, we need to try to resolve the
name during lowering. This isn't too hard since we already need to resolve names
for macro expansion anyway (though maybe a bit hacky).
Fixes rust-lang#1618.
Co-authored-by: Florian Diebold <[email protected]>
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E.g. in
match x { None => ... },Noneis a path pattern (resolving to theoption variant), not a binding. To determine this, we need to try to resolve the
name during lowering. This isn't too hard since we already need to resolve names
for macro expansion anyway (though maybe a bit hacky).
Fixes #1618.