IFX 2025 results in forrtl: severe (170): Program Exception - stack overflow error

[avinashs]

I am merely running a previously successful project in IFORT with the compiler option changed to IFX. The project compiles successfully but produces the run time error forrtl: severe (170): Program Exception - stack overflow (shown in the DOS window) and Unhandled exception at 0x00007FF72C2BFEE7 in myifxprog.exe: 0xC00000FD: Stack overflow (parameters: 0x0000000000000001, 0x0000000148803000) in a MSVSC popup window. Any suggestions would be greatly appreciated as there is no diagnostic information available. I also noticed that the debugger is not displaying any variables or the variables have a red bullet with a cross in it (undefined address).

[jimdempseyatthecove]

Enable all runtime checks, and run in Debug configuration. Something may show up.

Stack Overflow can occur when a temporary needs to be created for:

ArrayOut = (Array Expression)

If this be the case, then this can be corrected in two ways:

1) enable heap arrays

2) Replace the "offending" statement with DO loop(s)

Jim Dempsey

[avinashs]

@jimdempseyatthecove Thanks for the suggestions. I enabled heap arrays but the error did not go away. The debugger halts at a subroutine name i.e. at

           -> subroutine mysub(arg1, arg2)

and not at a specific executable statement. So cannot narrow it down to a particular variable. Again, the program works fine in IFORT and gfortran so this is an IFX specific error.

[Ron_Green]

Windows VS to set heap-arrays

PRoject Properties

  Fortran 

      Optimization

          Heap arrays set to 0

clean

Rebuild

run

If Linux use -heap-arrays

option. 

[avinashs]

@Ron_Green This is exactly what I did. The error persists with heap arrays.

[TobiasK]

@avinashs you may also show us how you define mysub and the subroutine that calls mysub.

@iu360 if you want some help you need to provide at least some information what your problem actually is, which code it triggers and under which circumstances. 

[TobiasK]

@avinashs 
could you please try to set heap-arrays not to zero but just leave it blank?