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[stable] Don't merge function types with unknown return type #21350

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Merged
dlang-bot merged 1 commit into from
May 19, 2025
Merged

[stable] Don't merge function types with unknown return type #21350

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5 changes: 5 additions & 0 deletions compiler/src/dmd/typesem.d
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Original file line number Diff line number Diff line change
Expand Up @@ -3315,6 +3315,11 @@
return type;
goto default;

case Tfunction:
if (!type.nextOf()) // don't merge if return type is unknown
return type;

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Added line #L3320 was not covered by tests
goto default;

default:
if (type.nextOf() && !type.nextOf().deco)
return type;
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