mirror of
https://github.com/nim-lang/Nim.git
synced 2025-12-28 17:04:41 +00:00
fixes #24203 `semTypeNode` is called twice for RHS'es of type sections, [here](b0e6d28782/compiler/semstmts.nim (L1612)) and [here](b0e6d28782/compiler/semstmts.nim (L1646)). Each time `prev` is `s.typ`, but the assertion expects `prev == nil` which is false since `s.typ` is not nil the second time. To fix this, the `prev == nil` part of the assertion is removed. The reason this only happens for types like `seq[int]`, `(int, int)` etc is because they don't have syms: `semTypeIdent` attempts to directly [replace the typedesc param itself](b0e6d28782/compiler/semtypes.nim (L1916)) with the sym of the base type of the resolved typedesc type if it exists, which means `semTypeNode` doesn't receive the typedesc param sym to perform the assert. (cherry picked from commit2a48182288)