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fix(frontend): Do not warn when a nested struct is provided as input to main #6239

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merged 2 commits into from
Oct 8, 2024
Merged

fix(frontend): Do not warn when a nested struct is provided as input to main #6239

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f755eb4
do not warn when a nested struct is provided as input to main
vezenovm Oct 8, 2024
6178229
Update compiler/noirc_frontend/src/tests/unused_items.rs
vezenovm Oct 8, 2024
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12 changes: 3 additions & 9 deletions compiler/noirc_frontend/src/elaborator/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -846,6 +846,9 @@ impl<'context> Elaborator<'context> {
for generic in generics {
self.mark_parameter_type_as_used(generic);
}
for (_, typ) in struct_type.borrow().get_fields(generics) {
self.mark_parameter_type_as_used(&typ);
}
}
Type::Alias(alias_type, generics) => {
self.mark_parameter_type_as_used(&alias_type.borrow().get_type(generics));
Expand All @@ -872,15 +875,6 @@ impl<'context> Elaborator<'context> {
| Type::Forall(..)
| Type::Error => (),
}

if let Type::Alias(alias_type, generics) = typ {
self.mark_parameter_type_as_used(&alias_type.borrow().get_type(generics));
return;
}

if let Type::Struct(struct_type, _generics) = typ {
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self.mark_struct_as_constructed(struct_type.clone());
}
}

fn run_function_lints(&mut self, func: &FuncMeta, modifiers: &FunctionModifiers) {
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21 changes: 21 additions & 0 deletions compiler/noirc_frontend/src/tests/unused_items.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -210,3 +210,24 @@ fn warns_on_unused_global() {
assert_eq!(ident.to_string(), "foo");
assert_eq!(item.item_type(), "global");
}

#[test]
fn no_warning_on_inner_struct_when_parent_is_used() {
let src = r#"
struct Bar {
inner: [Field; 3],
}

struct Foo {
a: Field,
bar: Bar,
}

fn main(foos: [Foo; 1]) {
assert_eq(foos[0].a, 10);
}
"#;

let errors = get_program_errors(src);
assert_eq!(errors.len(), 0);
}
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