[Bug c/118061] [15 regression] ICE: tree check: expected class 'type', have 'exceptional' (error_mark) in tagged_types_tu_compatible_p, at c/c-typeck.cc:1946

[yunboni at smail dot nju.edu.cn via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118061

Yunbo Ni <yunboni at smail dot nju.edu.cn> changed:

           What    |Removed                     |Added
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                 CC|                            |yunboni at smail dot nju.edu.cn

--- Comment #2 from Yunbo Ni <yunboni at smail dot nju.edu.cn> ---
There's another case that triggers the same ICE:

```c
union {
  struct a b;
  char c;
  int d
} union {
  struct e b;
  char c;
  int d;
```