SemverQuery(
id: "exported_function_target_feature_added",
human_readable_name: "exported fn now requires target features",
description: "An exported function added a #[target_feature] requirement.",
required_update: Major,
lint_level: Deny,
reference_link: Some("https://doc.rust-lang.org/reference/attributes/codegen.html#the-target_feature-attribute"),
query: r#"
{
CrateDiff {
current {
ffi_exported_function {
... on Function {
export_name @output @tag
fn_name: name @output
requires_feature {
explicit @filter(op: "=", value: ["$true"])
globally_enabled @filter(op: "!=", value: ["$true"])
new_feature: name @output
}
requires_feature @fold @transform(op: "count") @filter(op: "=", value: ["$zero"]) {
valid_for_current_target @filter(op: "!=", value: ["$true"])
}
span_: span @optional {
filename @output
begin_line @output
end_line @output
}
}
}
}
baseline {
ffi_exported_function {
... on Function {
export_name @filter(op: "=", value: ["%export_name"])
requires_feature @fold @transform(op: "count") @filter(op: "=", value: ["$zero"])
}
}
}
}
}"#,
arguments: {
"zero": 0,
"true": true,
},
error_message: "An exported function now requires specific CPU target features in order to be called.",
per_result_error_template: Some("{{fn_name}} exported as {{export_name}} now requires {{new_feature}} in {{span_filename}}:{{span_begin_line}}"),
witness: None,
)