`include_str!(file!())` does not work on godbolt about gccrs HOT 2 OPEN

How do we know this is a gccrs bug instead of a godbolt bug?

from gccrs.

I tried this code in godbolt and got the following interesting result: https://godbolt.org/z/hMb9bso3j

<source>:14:4: error: assignment of read-only location '{.data=(unsigned char * const *) "<source>", .len=15}'
   14 |    file!() = "bob";
      |    ^~~~
Compiler returned: 1

However, for gccrs on my laptop, I get

main2.rs:14:4: error: assignment of read-only location ‘{.data=(unsigned char * const *) "main2.rs", .len=8}’
   14 |    file!() = "bob";
      |    ^~~~

If you use rustc, and try the valid version of this code, you get /app/example.rs. I wonder if they handle rustc and gccrs differently in this case?

from gccrs.