https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107768
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This should fix the issue (just like what was done in PR 51045):
diff --git a/gcc/cp/coroutines.cc b/gcc/cp/coroutines.cc
index 01a3e831ee5..96875425ba6 100644
--- a/gcc/cp/coroutines.cc
+++ b/gcc/cp/coroutines.cc
@@ -4131,7 +4131,7 @@ coro_rewrite_function_body (location_t fn_start, tree
fnbody, tree orig,
/* We will need to be able to set the resume function pointer to nullptr
to signal that the coroutine is 'done'. */
tree zero_resume
- = build1 (CONVERT_EXPR, resume_fn_ptr_type, integer_zero_node);
+ = build1 (CONVERT_EXPR, resume_fn_ptr_type, nullptr_node);
/* The pointer to the destroy function. */
tree var = coro_build_artificial_var (fn_start, coro_destroy_fn_id,
@@ -4518,7 +4518,7 @@ morph_fn_to_coro (tree orig, tree *resumer, tree
*destroyer)
tree ramp_body = push_stmt_list ();
tree zeroinit = build1_loc (fn_start, CONVERT_EXPR,
- coro_frame_ptr, integer_zero_node);
+ coro_frame_ptr, nullptr_node);
tree coro_fp = coro_build_artificial_var (fn_start, "_Coro_frameptr",
coro_frame_ptr, orig, zeroinit);
tree varlist = coro_fp;
@@ -4753,7 +4753,7 @@ morph_fn_to_coro (tree orig, tree *resumer, tree
*destroyer)
gcc_checking_assert (same_type_p (fn_return_type, TREE_TYPE (grooaf)));
tree if_stmt = begin_if_stmt ();
- tree cond = build1 (CONVERT_EXPR, coro_frame_ptr, integer_zero_node);
+ tree cond = build1 (CONVERT_EXPR, coro_frame_ptr, nullptr_node);
cond = build2 (EQ_EXPR, boolean_type_node, coro_fp, cond);
finish_if_stmt_cond (cond, if_stmt);
if (VOID_TYPE_P (fn_return_type))
