topic Re:Bug Report ICE: "catastrophic error" with ieee_arithmetic module's ieee_value (ifx 2024.2) in Intel® Fortran Compiler

Bug Report ICE: "catastrophic error" with ieee_arithmetic module's ieee_value (ifx 2024.2)

jeffhole — Fri, 28 Jun 2024 18:51:53 GMT

Compiler: ifx (IFX) 2024.2.0 20240602 (ifx --version)

OS: Rocky Linux 8.9 (Green Obsidian)

I encountered an interesting ICE when setting double precision complex number arrays to "NaN". I don't know if this is a misuse of the ieee_arithmetic's ieee_value(), or if it is standard-compliant, but here it is:

! file: test.f90 program main use, intrinsic :: ieee_arithmetic, only: ieee_value, ieee_quiet_nan implicit none complex(8), allocatable :: x(:) allocate(x(3)) x = cmplx(ieee_value(x%re,ieee_quiet_nan), ieee_value(x%im,ieee_quiet_nan), kind=8) print *, x%im end program

Compiling on the command line:

ifx test.f90

I get this compiler error message:

test.f90(8): internal error: Please visit 'http://www.intel.com/software/products/support' for assistance. x = cmplx(ieee_value(x%re,ieee_quiet_nan), ieee_value(x%im,ieee_quiet_nan), kind=8) ^ test.f90(8): catastrophic error: Internal Compiler Error: Ref module: ffe_aexpr.c compilation aborted for test.f90 (code 1)

Workaround

I found a workaround which is to only pass a single value of x for the first argument of ieee_value():

! file: workaround.f90 program main use, intrinsic :: ieee_arithmetic, only: ieee_value, ieee_quiet_nan implicit none complex(8), allocatable :: x(:) allocate(x(3)) x = cmplx(ieee_value(x(1)%re,ieee_quiet_nan), ieee_value(x(1)%im,ieee_quiet_nan), kind=8) print *, x%im end program

This seems like the right thing to do. I wanted to share this solution and give the compiler team code to reproduce the error. Thanks!

Re: Bug Report ICE: "catastrophic error" with ieee_arithmetic module's ieee_value (ifx 202

JFH — Sun, 30 Jun 2024 22:02:43 GMT

@jeffhole's test.f90 program compiles and runs correctly with ifort. If one changes the kind 8 to either 4 or 16 it still crashes with ifx and runs correctly with ifort.

Re:Bug Report ICE: "catastrophic error" with ieee_arithmetic module's ieee_value (ifx 2024.2)

Devorah_H_Intel — Mon, 01 Jul 2024 20:54:08 GMT

I reproduced the issue internally. Thank you for the report. This case has been escalated to compiler engineering.

Re: Bug Report ICE: "catastrophic error" with ieee_arithmetic module's ieee_value (ifx 202

jeffhole — Mon, 01 Jul 2024 21:10:50 GMT

Thanks @JFH for checking this against ifort. Good thing to know.

You're welcome, @Devorah_H_Intel! Glad to help!

Re: Bug Report ICE: "catastrophic error" with ieee_arithmetic module's ieee_value (ifx 202

jeffhole — Tue, 01 Jul 2025 12:29:06 GMT

I tested this under the latest release 2025.2.0 and the issue is still showing. I looked at the support ticket opened on my behalf at Intel Support and it's status is "closed: final". Is there a status update on this?

Thank you!

P.S. The support ticket is #06274899, created 2024/07/01 13:09 and last updated 2024/12/19 00:48.