| Issue | 131654 |
|---|---|
| Summary | constexpr-unknown allows illegal pointer arithmetic |
| Labels | clang:frontend |
| Assignees | |
| Reporter | efriedma-quic |
```
constexpr int f() { int &a = a; return &a+3-&a; }
constexpr int z = f();
```Currently accepted with -std=c++23. Should be rejected: the pointer arithmetic is nonsense. CC @shafik @frederick-vs-ja
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