[Bug middle-end/125224] New: ASAN_* internal function documentation is lacking

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125224

            Bug ID: 125224
           Summary: ASAN_* internal function documentation is lacking
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Keywords: documentation, internal-improvement
          Severity: enhancement
          Priority: P3
         Component: middle-end
          Assignee: pinskia at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

Currently the documentation for this is:
```
@cindex @code{IFN_ASAN_MARK} internal function
@item @samp{IFN_ASAN_MARK}
The @code{IFN_ASAN_MARK} internal function is expanded by the
@code{expand_ASAN_MARK} function.

```

But expand_ASAN_MARK is just `gcc_unreachable ();` with:
/* This should get expanded in the sanopt pass.  */

ASt least it should point to asan_expand_mark_ifn.