topic IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated in Intel® Fortran Compiler

IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated

fortrandave — Wed, 15 Feb 2023 20:33:46 GMT

Greetings,

Please consider the following code which generates a runtime error in IFX 2023.0.0 but not in Classic. Can this be fixed for the next point release?

! Compiles and runs with with Classic: ! Intel(R) Fortran Intel(R) 64 Compiler Classic for applications running on ! Intel(R) 64, Version 2021.8.0 Build 20221119_000000 ! ! Compiles but generates run time errors with IFX: ! Intel(R) Fortran Compiler for applications running on Intel(R) 64, Version ! 2023.0.0 Build 20221201 ! forrtl: severe (153): allocatable array or pointer is not allocated !*********************************************************************** module mymod_m implicit none type mytype character(:), allocatable :: links end type mytype type(mytype), target :: sd contains !******************************************************************************* subroutine update(fdir) character(len=*), intent(in) :: fdir print *, "fdir in update: "//trim(fdir) sd%links = fdir end subroutine update !******************************************************************************* function fixdir() result(fdir) character(:), allocatable :: fdir fdir = 'stuff' call update(fdir) print *, "fdir in fixdir: ", fdir end function fixdir end module mymod_m !******************************************************************************* program allocate_error use mymod_m implicit none sd%links = fixdir() end program allocate_error

Thanks,
Dave

Re: IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated

JohnNichols — Wed, 15 Feb 2023 23:01:38 GMT

it runs and you get the correct answer in ifx, but for some strange reason it throws the error on exiting line 44 it appears. Watch shows the correct value on entry.

Re: IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated

andrew_4619 — Wed, 15 Feb 2023 23:27:03 GMT

It certainly would not win prizes for good coding practice but I would be interested in some comment of the legality. I would expect the fixdir function on the RHS to fully complete before sd%links updates on the LHS but fixdir changes sd%links during it execution so sd%links gets updated twice.....

Re: IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated

Barbara_P_Intel — Fri, 17 Feb 2023 21:11:07 GMT

It's good to see so many people using ifx! Thanks for reporting this issue.

It fails on Linux at line 44, too.

I filed a bug, CMPLRLLVM-45010. I'll let you know about the fix.

Re:IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated

Barbara_P_Intel — Tue, 21 Feb 2023 15:46:15 GMT

I checked with the resident Intel Fortran standards expert. He says it is legal Fortran.

Re: IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated

fortrandave — Wed, 22 Feb 2023 16:43:18 GMT

You're welcome! Thanks for accepting this as a bug. I'm planning on looking at ifx releases as they come out. There's been some great progress in the last year.

I'll follow this thread and watch for a resolution.

Re: Re:IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated

fortrandave — Wed, 22 Feb 2023 16:46:07 GMT

Thanks for checking on this. I thought it was legal, though I agree with @andrew_4619 that it's not the best coding practice.

Re:IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated

Barbara_P_Intel — Tue, 21 Nov 2023 22:11:57 GMT

@fortrandave, the runtime error is gone with ifx 2024.0.0 that was released this week. Another one fixed for you!

Re: Re:IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated

fortrandave — Wed, 22 Nov 2023 15:36:04 GMT

Thanks again! I'll verify on my side once I get my hands on 2024.0. Corporate environments take a bit longer to process things.

Re: Re:IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated

JohnNichols — Wed, 22 Nov 2023 16:11:43 GMT

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Re: Re:IFX 2023.0.0 runtime error on Windows - allocatable array or pointer is not allocated

fortrandave — Wed, 22 Nov 2023 18:48:19 GMT

No kidding. Thanks for a good laugh! I'm hoping to have it in hand not too long after our Thanksgiving break.