fallible ergonomics

compiler/hir/hir.odin

@@ -129,6 +129,9 @@ Expr :: struct {
 	type:       types.Type,
 	integer:    i64,
 	args:       []Expr_Id,
+	// `Catch` block handlers use `body` for the handler statements and `target`
+	// for the optional captured error local.
+	body:       []Stmt_Id,
 	target:     Ref,
 	left:       Expr_Id,
 	right:      Expr_Id,
@@ -269,6 +272,7 @@ init_module :: proc(selected := target.DEFAULT, allocator := context.allocator)
 destroy_module :: proc(module: ^Module) {
 	for expr in module.exprs {
 		delete(expr.args, module.allocator)
+		delete(expr.body, module.allocator)
 	}
 	for statement in module.statements {
 		delete(statement.unwraps, module.allocator)