Simple ICE

[OP1]

The following code produces an ICE (error #5270: Internal Compiler Error: symbol not a SYMTOK). The code is a bit silly in the sense that the module M is (obviously) absent - and the compiler correctly identifies that error. Still, no ICE should be produced after that - so I report this in the spirit of completeness.

This is with Intel Fortran Compiler Classic 2021.5.0 [IA-32].

SUBMODULE (M) F
CONTAINS
MODULE FUNCTION F() RESULT(R)
END
END

Interestingly...

• If you replace line 3 with either MODULE PROCEDURE F or MODULE SUBROUTINE F, then no ICE is produced.
• If you remove RESULT(R) from line 3, no ICE is produced.

[Barbara_P_Intel]

Thanks for reporting this. You certainly find some obscure issues. But we like it!

I filed CMPLRIL0-34665 for you. I'll let you know when the fix is available.

[OP1]

Thanks @Barbara_P_Intel !

One of the 'benefits' of working on a huge code is that it gives plenty of opportunities for the developer to create silly coding mistakes - that can be boiled down (after a little bit of work, admittedly) to simple reproducers like this.

I swear I am not doing this on purpose, ha ha.

[Barbara_P_Intel · Accepted solution]

This ICE melted in the latest compiler release, 2021.7.0, which is part of the oneAPI HPC Toolkit 2022.3. This version was released earlier this month.

Please try it!