Internal compiler error

[JoakimKjellsson]

I've encountered an internal compiler error when compiling the OpenIFS atmosphere code from ECMWF. Most files in the code base compile fine but crashes towards the very end with the error

          #0 0x0000000003351981
          #1 0x00000000033b7157
          #2 0x00000000033a2a8a
          #3 0x000000000333862d
          #4 0x000000000338a229
          #5 0x00000000033874b9
          #6 0x00000000033869f4
          #7 0x0000000003296232
          #8 0x0000000003295be4
          #9 0x0000000003476f7a
         #10 0x00007f801f02a610
         #11 0x00007f801f02a6c0 __libc_start_main + 128
         #12 0x00000000030d0bae

/nobackup/proj/flash/naiss2026-1-40/personal/joakim/models_intel/ecearth4/sources/oifs-48r1/source/ifs_dp/arpifs/control/cnt1.F90(13): error #5623: **Internal compiler error: internal abort** Please report this error along with the circumstances in which it occurred in a Software Problem Report.  Note: File and line given may not be explicit cause of this error.
SUBROUTINE CNT1(YDGEOMETRY,YDFIELDS,YDMTRAJ,YDMODEL,YDJOT,YDVARBC,YDTCV,YDODB,YDFPOS)
-----------^
compilation aborted for /nobackup/proj/flash/naiss2026-1-40/personal/joakim/models_intel/ecearth4/sources/oifs-48r1/source/ifs_dp/arpifs/control/cnt1.F90 (code 3)
make[2]: *** [ifs_dp/CMakeFiles/arpifs.DP.dir/build.make:3139: ifs_dp/CMakeFiles/arpifs.DP.dir/arpifs/control/cnt1.F90.o] Error 3

As you can see the error points to the definition of a subroutine but I can't see what would be wrong with it. The exact same code compiles fine on several other machines under both GNU and Intel compilers of various versions. I'm using Intel 2025.2. 

I have tested using both "mpiifort" and "mpiifx" to compile but same error. 

The subroutine can be found here: 
https://github.com/ecmwf-ifs/openifs/blob/main/ifs-source/arpifs/control/cnt1.F90

and I've attached a file with the full argument used and error message. 

Many thanks in advance for any help or advice!

/Joakim