[Bug c/101313] ICE: tree check: expected class ‘type’, have ‘exceptional’ (error_mark) in count_type_elements, at expr.c:6273

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101313

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This fixes the ICE:
```
[apinski@xeond2 gcc]$ git diff
diff --git a/gcc/expr.cc b/gcc/expr.cc
index 2918c469735..06f640009c6 100644
--- a/gcc/expr.cc
+++ b/gcc/expr.cc
@@ -7014,7 +7014,7 @@ count_type_elements (const_tree type, bool for_ctor_p)
           of the fields.  */
        n = 1;
        for (f = TYPE_FIELDS (type); f ; f = DECL_CHAIN (f))
-         if (TREE_CODE (f) == FIELD_DECL)
+         if (TREE_CODE (f) == FIELD_DECL && !error_operand_p (f))
            {
              m = count_type_elements (TREE_TYPE (f), false);
              /* If the field doesn't span the whole union, add an extra

```

Since this function is only called from the FE or while gimplifying, the check
for error_operand should be ok.