SemverQuery(
id: "exported_function_changed_abi",
human_readable_name: "exported function changed ABI",
description: "A function marked `#[no_mangle]` or assigned an explicit `#[export_name]` changed its external ABI.",
required_update: Major,
lint_level: Deny,
reference_link: Some("https://doc.rust-lang.org/reference/items/external-blocks.html#abi"),
query: r#"{
CrateDiff {
baseline {
ffi_exported_function {
export_name @filter(op: "is_not_null") @tag
abi_: abi {
name @tag @output
raw_name @output
}
}
}
current {
ffi_exported_function {
name @output
export_name @filter(op: "=", value: ["%export_name"]) @output
new_abi_: abi {
name @filter(op: "!=", value: ["%name"]) @output
raw_name @output
}
span_: span @optional {
filename @output
begin_line @output
end_line @output
}
}
}
}
}"#,
arguments: {
// No arguments!
},
error_message: "A function with an export_name has changed ABI.",
per_result_error_template: Some("{{name}} exported as {{export_name}} changed from {{abi_raw_name}} to {{new_abi_raw_name}} in {{span_filename}}:{{span_begin_line}}"),
)