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Kevin Reid
f5d3b158b9
This prevents spurious errors when a field is intended to be present
but a preceding syntax error caused it not to be parsed. For example,
StructName { foo: 1 bar: 2 }
will not successfully parse a field `bar`, and we will report the syntax
error but not the missing field.
39 lines
1021 B
Rust
39 lines
1021 B
Rust
// Check that a syntax error inside a struct literal does not also report missing fields,
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// because the field might be present but hidden by the syntax error.
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//
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// The stderr for this test should contain ONLY one syntax error per struct literal,
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// and not any errors about missing fields.
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struct Foo { a: isize, b: isize }
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fn make_a() -> isize { 1234 }
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fn expr_wrong_separator() {
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let f = Foo { a: make_a(); b: 2 }; //~ ERROR found `;`
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}
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fn expr_missing_separator() {
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let f = Foo { a: make_a() b: 2 }; //~ ERROR found `b`
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}
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fn expr_rest_trailing_comma() {
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let f = Foo { a: make_a(), ..todo!(), }; //~ ERROR cannot use a comma
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}
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fn expr_missing_field_name() {
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let f = Foo { make_a(), b: 2, }; //~ ERROR found `(`
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}
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fn pat_wrong_separator(Foo { a; b }: Foo) { //~ ERROR expected `,`
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let _ = (a, b);
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}
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fn pat_missing_separator(Foo { a b }: Foo) { //~ ERROR expected `,`
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let _ = (a, b);
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}
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fn pat_rest_trailing_comma(Foo { a, .., }: Foo) { //~ ERROR expected `}`, found `,`
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}
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fn main() {}
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