bjoernager/rust
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coverage: Apply #[coverage(..)] recursively to nested functions

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This commit is contained in:
Zalathar 2024-06-22 16:34:24 +10:00
parent 457fda1701
commit 3262611cc5
8 changed files with 60 additions and 156 deletions
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12
compiler/rustc_mir_transform/src/coverage/query.rs
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@ -55,6 +55,7 @@ fn is_eligible_for_coverage(tcx: TyCtxt<'_>, def_id: LocalDefId) -> bool {
/// Query implementation for `coverage_attr_on`.
fn coverage_attr_on(tcx: TyCtxt<'_>, def_id: LocalDefId) -> bool {
// Check for annotations directly on this def.
if let Some(attr) = tcx.get_attr(def_id, sym::coverage) {
match attr.meta_item_list().as_deref() {
Some([item]) if item.has_name(sym::off) => return false,
@ -66,9 +67,14 @@ fn coverage_attr_on(tcx: TyCtxt<'_>, def_id: LocalDefId) -> bool {
}
}
// We didn't see an explicit coverage attribute, so
// allow coverage instrumentation by default.
true
match tcx.opt_local_parent(def_id) {
// Check the parent def (and so on recursively) until we find an
// enclosing attribute or reach the crate root.
Some(parent) => tcx.coverage_attr_on(parent),
// We reached the crate root without seeing a coverage attribute, so
// allow coverage instrumentation by default.
None => true,
}
}
/// Query implementation for `coverage_ids_info`.