Add validation for functions without body

Add checks in the ast validation pass to error out with functions (either free or associated) without a definition. gcc/rust/ChangeLog: * checks/errors/rust-ast-validation.cc (ASTValidation::visit): Add a validation check and emit an error depending on the context. Signed-off-by: Pierre-Emmanuel Patry <[email protected]>
Rust-GCC · Dec 5, 2023 · 8e7c439 · 8e7c439
1 parent ef365e1
commit 8e7c439
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/gcc/rust/checks/errors/rust-ast-validation.cc b/gcc/rust/checks/errors/rust-ast-validation.cc
@@ -109,6 +109,16 @@ ASTValidation::visit (AST::Function &function)
       function.get_self_param ()->get_locus (),
       "%<self%> parameter is only allowed in associated functions");
 
+  if (!function.has_body ())
+    {
+      if (context.back () == Context::INHERENT_IMPL
+	  || context.back () == Context::TRAIT_IMPL)
+	rust_error_at (function.get_locus (),
+		       "associated function in %<impl%> without body");
+      else if (context.back () != Context::TRAIT)
+	rust_error_at (function.get_locus (), "free function without a body");
+    }
+
   if (function.is_variadic ())
     rust_error_at (
       function.get_function_params ().back ()->get_locus (),