| Issue |
97830
|
| Summary |
C23 constexpr should not have external linkage
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
gustedt
|
Hi,
thanks for implementing `constexpr` for clang-19!
The following code
```{.C}
constexpr int category_width = 5;
int const w = 5;
int const* a = &category_width;
```
compiles, but produces an external symbol for `category_width` and then multiple defined symbol errors on linkage. So I cannot use `constexpr` in header files, or I'd have to prefix it with `static`, which defeats the purpose of `constexpr` ...
C23 has in 6.2.2 p3
> If the declaration of a file scope identifier for:
> — an object contains any of the storage-class specifiers `static` or `constexpr`;
> — or, a function contains the storage-class specifier `static`,
> then the identifier has internal linkage.
Thanks
Jens
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