[Bug c++/80059] [7 Regression] ICE with invalid noexcept for __transaction_atomic

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80059

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This seems to fix it:

--- a/gcc/cp/except.c
+++ b/gcc/cp/except.c
@@ -271,7 +271,7 @@ build_must_not_throw_expr (tree body, tree cond)
       cond = perform_implicit_conversion_flags (boolean_type_node, cond,
                        tf_warning_or_error,
                        LOOKUP_NORMAL);
-      cond = cxx_constant_value (cond);
+      cond = fold_non_dependent_expr (cond);
       if (integer_zerop (cond))
    return body;
       else if (integer_onep (cond))