From 3949b7c0a87475692d1727086bdccb8133c53497 Mon Sep 17 00:00:00 2001 From: Iain Sandoe Date: Wed, 14 Aug 2024 13:30:30 +0100 Subject: [PATCH] c++, coroutines: Check for malformed functions before splitting. This performs the same basic check that is done by finish_function to catch cases where the function is so badly malformed that we do not have a consistent binding level. gcc/cp/ChangeLog: * coroutines.cc (split_coroutine_body_from_ramp): Check that the binding level is as expected before attempting to outline the function body. Signed-off-by: Iain Sandoe --- gcc/cp/coroutines.cc | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/gcc/cp/coroutines.cc b/gcc/cp/coroutines.cc index f7791cbfb9a..7af2a188561 100644 --- a/gcc/cp/coroutines.cc +++ b/gcc/cp/coroutines.cc @@ -4553,10 +4553,16 @@ coro_rewrite_function_body (location_t fn_start, tree fnbody, tree orig, static tree split_coroutine_body_from_ramp (tree fndecl) { - tree body; + /* Sanity-check and punt if we have a nonsense tree because of earlier + parse errors, perhaps. */ + if (!current_binding_level + || current_binding_level->kind != sk_function_parms) + return NULL_TREE; + /* Once we've tied off the original user-authored body in fn_body. Start the replacement synthesized ramp body. */ + tree body; if (use_eh_spec_block (fndecl)) { body = pop_stmt_list (TREE_OPERAND (current_eh_spec_block, 0)); -- 2.11.4.GIT