How to test if a string is pointing into read-only memory?

[Kagamin]

On Tuesday, 12 October 2021 at 08:19:01 UTC, jfondren wrote:
> and string literals weren't reliably in read-only memory as 
> recently as early 2017: 
> https://github.com/dlang/dmd/pull/6546#issuecomment-280612721

Sometimes sections have defined symbols for start and end, you 
can check if the string is in rdata section. On windows you can 
test it generically with IsBadWritePtr function.