https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118951
Bug ID: 118951
Summary: __FILE__ inserts the filename as array, __builtin_FILE
as pointer
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: fabian_kessler at gmx dot de
Target Milestone: ---
__builtin_FILE should return the FILE_PATH as array, not as pointer.
This wouldn't have any drawbacks, since an array can be decayed as a pointer,
but it is currently not possible, to do it the other way round for 0-terminated
strings.
Returning __builtin_FILE as array will allow code like the following:
```
template <class T, auto File = __builtin_FILE(), auto Line = __builtin_line()>
struct strong_alias<>{/*...*/};
```
In the current situation, it is only possible, to do this via macros.
Also add __builtin_FILE_NAME, which is supported by clang.
