make default values typed in proc AST same as param sym AST #24184
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Araq
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Sep 27, 2024
…24191) Reverts #24184, reopens #12942, reopens #19118 #24184 seems to have caused a regression in https://github.com/c-blake/thes and https://github.com/c-blake/bu/blob/main/rp.nim#L84 reproducible with `git clone https://github.com/c-blake/cligen; git clone https://github.com/c-blake/thes; cd thes; nim c -p=../cligen thes`. Changing the `const` to `let` makes it compile. A minimization that is probably the same issue is: ```nim const a: seq[string] = @[] proc foo(x = a) = echo typeof(x) echo x import macros macro resemFoo() = result = getImpl(bindSym"foo") block: resemFoo() # Error: cannot infer the type of parameter 'x' ``` This should be a regression test in a future reimplementation of #24184.
metagn
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Sep 28, 2024
refs nim-lang#24184, refs (fixes) nim-lang#23010, nim-lang#22793
This was referenced Sep 28, 2024
Araq
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Oct 3, 2024
fixes #23010, split from #24195 When resemming bracket nodes, the compiler currently unconditionally makes a new node with an array type based on the node. However the VM can generate bracket nodes with `seq` types, which this erases. To fix this, if a bracket node already has a type, we still resem the bracket node, but don't construct a new type for it, instead using the type of the original node. A version of this was rejected that didn't resem the node at all if it was typed, but I can't find it. The difference with this one is that the individual elements are still resemmed. This should fix the break caused by #24184 so we could redo it after this PR but it might still have issues, not to mention the related pre-existing issues like #22793, #12559 etc.
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fixes #12942, fixes #19118
This is the exact same as #20735 but maybe the situation has improved after #24065.