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Here is a cut-down reproducer that shows some peculiar behavior when compiled with IFX /Od on Windows. I am using the "Intel(R) 64, Version 2022.2.1 Build 20221101" version.
The program (link given below) runs with no error when compiled with Ifort, Gfortran, NAG, etc. It runs correctly even with IFX if /Od is not used, or if some of the Print statements in the program are commented out, or if the EQUIVALENCE between two integer variables is removed (this is easy to do with the small reproducer, but much more troublesome in the original test program, which is about 20,000 lines of Fortran 77).
Please note the puzzling line number of zero in the traceback:
S:\ALGO\ODEPACK\HYB\npol\Morn\pol\p2\tbed>ifx /Od tmdIfx.f90
Intel(R) Fortran Compiler for applications running on Intel(R) 64, Version 2022.2.1 Build 20221101
Copyright (C) 1985-2022 Intel Corporation. All rights reserved.
Microsoft (R) Incremental Linker Version 14.33.31629.0
Copyright (C) Microsoft Corporation. All rights reserved.
-out:tmdIfx.exe
-debug
-pdb:tmdIfx.pdb
-subsystem:console
-incremental:no
tmdIfx.obj
S:\ALGO\ODEPACK\HYB\npol\Morn\pol\p2\tbed>tmdifx
forrtl: severe (157): Program Exception - access violation
Image PC Routine Line Source
tmdIfx.exe 00007FF793841CD8 MDM 22 tmdIfx.f90
tmdIfx.exe 00007FF7938414AD MD 39 tmdIfx.f90
tmdIfx.exe 00007FF793841176 MD.t0p.t0p.t0p.t0 0 tmdIfx.f90
tmdIfx.exe 00007FF793841098 TMD 12 tmdIfx.f90
tmdIfx.exe 00007FF7938422CE Unknown Unknown Unknown
tmdIfx.exe 00007FF793844C84 Unknown Unknown Unknown
KERNEL32.DLL 00007FF86E42244D Unknown Unknown Unknown
ntdll.dll 00007FF86F9ADFB8 Unknown Unknown Unknown
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Thanks for sending this example.
I confirmed the error in the 2022.2.1 compiler.
Then tested with the 2023.0.0 compiler which SHOULD be releasing soon, either later Dec 2022 or early Jan 2023. No error with this compiler. So a fix is on the way. Between the compiler you have and this yet-to-be-released compiler there were a number of fixes for debug symbol creation.
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Thanks for sending this example.
I confirmed the error in the 2022.2.1 compiler.
Then tested with the 2023.0.0 compiler which SHOULD be releasing soon, either later Dec 2022 or early Jan 2023. No error with this compiler. So a fix is on the way. Between the compiler you have and this yet-to-be-released compiler there were a number of fixes for debug symbol creation.

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