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I'm using Intel Fortran Version 16.0.3.207 Build 20160415 on Windows 10 (32-bit).
This took some time to produce a minimal code that reproduces the issue. The module below, when compiled with:
ifort.exe /debug:full /dll testmod.f90
Produces the error: "catastrophic error: **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."
module testmod implicit none abstract interface function func_ptr_interface(x) result(y) integer :: x integer :: y end function func_ptr_interface end interface contains subroutine test(func_ptr) procedure(func_ptr_interface) :: func_ptr block real :: x end block end subroutine test end module testmod
This error does not occur if I take out the BLOCK statement, or if I move the INTERFACE into a different MODULE, or if I just remove the dummy argument "func_ptr" from "test", or if I don't compile with "/debug:full".
My workaround is to move the INTERFACE into another MODULE. I suppose this is a bug report, but others may find this useful...
As an aside, I started down this path because in the actual project I'm also using /warn:unused, and the compiler was warning me about an unused return value / result from a function, even though I was clearly using it. I started reducing the code's complexity to isolate the problem, then the internal compiler error came up. But, moving the INTERFACE to another MODULE also fixed the erroneous warning, so I suspect they are related.
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I can reproduce this in 16.0.3 but not 17.0.0, so it looks as if it was already fixed.
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