locus);
}
+static void
+check_target_attr (HIR::Function *fn, Location locus)
+{
+ if (std::any_of (fn->get_outer_attrs ().begin (),
+ fn->get_outer_attrs ().end (),
+ [] (const AST::Attribute &attr) {
+ return attr.get_path ().as_string () == "target_feature";
+ }))
+ rust_error_at (locus,
+ "call to function with %<#[target_feature]%> requires "
+ "unsafe function or block");
+}
+
+void
+UnsafeChecker::check_function_attr (HirId node_id, Location locus)
+{
+ if (unsafe_context.is_in_context ())
+ return;
+
+ auto maybe_fn = mappings.lookup_hir_item (node_id);
+
+ if (maybe_fn && maybe_fn->get_item_kind () == Item::ItemKind::Function)
+ check_target_attr (static_cast<Function *> (maybe_fn), locus);
+}
+
void
UnsafeChecker::visit (Lifetime &)
{}
rust_assert (mappings.lookup_node_to_hir (ref_node_id, &definition_id));
- // At this point we have the function's HIR Id. There are two checks we
+ // At this point we have the function's HIR Id. There are three checks we
// must perform:
// 1. The function is an unsafe one
// 2. The function is an extern one
+ // 3. The function is marked with a target_feature attribute
check_function_call (definition_id, expr.get_locus ());
+ check_function_attr (definition_id, expr.get_locus ());
if (expr.has_params ())
for (auto &arg : expr.get_arguments ())
*/
void check_function_call (HirId node_id, Location locus);
+ /**
+ * Check if any unsafe attributes are present on a function
+ */
+ void check_function_attr (HirId node_id, Location locus);
+
StackedContexts<HirId> unsafe_context;
Resolver::TypeCheckContext &context;
{"repr", CODE_GENERATION},
{"path", EXPANSION},
{"macro_use", NAME_RESOLUTION},
+ // FIXME: This is not implemented yet, see
+ // https://github.com/Rust-GCC/gccrs/issues/1475
+ {"target_feature", CODE_GENERATION},
// From now on, these are reserved by the compiler and gated through
// #![feature(rustc_attrs)]
{"rustc_inherit_overflow_checks", CODE_GENERATION}};