PGI / Flang compilers not working

[fortran-lang]

PGI / Flang compilers not working

[scivision]

My opinion on PGI & Flang re: stdlib is to wait for the next releases of PGI & Flang. They've each made a lot of progress in 2019 w.r.t. Fortran 2008 support.

• expect no-charge PGI 20.4 in April-May 2020 if prior years' release schedule holds
• F18 is anticipated to come with LLVM 11 (F18 just missed the LLVM 10 merge window in Jan 2020)

[certik]

Is the issue around quadruple precision?

[scivision]

Quadruple precision was part of the issue which I fixed with the #ifdef REAL128. However this remaining issue seems to be an actual compiler bug.

[certik]

If it's too much of a hassle, we can wait with officially supporting Flang until they fix such issues.

[rweed]

I've had similar issues with PGI and flang. I tried compiling my hashMap routines and both gave the same error (but with different equally confusing messages). I reported this to PGI about 1.5 years ago and haven't heard anything from them. Hopefully, flang/f18 will be more robust but I wouldn't rely on current PGI building anything that uses any OO features.