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Setting a type alias in local scope doesn't define the variable anymore in some special cases #57574

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KristofferC opened this issue Feb 28, 2025 · 0 comments
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Setting a type alias in local scope doesn't define the variable anymore in some special cases #57574

KristofferC opened this issue Feb 28, 2025 · 0 comments
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@mlechu
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regression Regression in behavior compared to a previous version
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1.12

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@KristofferC
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KristofferC commented Feb 28, 2025 •
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This used to work in 1.11 but errors in 1.12 with B not defined:

struct A{T} end

let
    for B in ()
    end
    let
        B{T} = A{T}
        B
    end
end

Bisected to #54773.
@KristofferC KristofferC added the regression Regression in behavior compared to a previous version label Feb 28, 2025
@KristofferC KristofferC added this to the 1.12 milestone Feb 28, 2025
@mlechu mlechu mentioned this issue Mar 5, 2025
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xal-0 added a commit to xal-0/julia that referenced this issue Mar 19, 2025
@xal-0 @mlechu
const lowering: resolve scopes under assign-const-if-global
cbce6cd 
Fixes JuliaLang#57574

Co-authored-by: Em Chu <im.mlechu@gmail.com>
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regression Regression in behavior compared to a previous version
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