| Issue |
150340
|
| Summary |
clang incorrectly allows converting function pointers to and from void* in constant expressions
|
| Labels |
clang:frontend,
constexpr
|
| Assignees |
|
| Reporter |
efriedma-quic
|
Consider:
```
void f();
constexpr auto p1 = (void*)f;
constexpr auto p2 = (void(*)())p1;
```
clang currently accepts, but these should be rejected. [expr.const] says an _expression_ is not a constant _expression_ if it contains a reinterpret_cast ... and converting a function pointer to an object pointer requires a reinterpret_cast.
gcc rejects, MSVC accepts p1.
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