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I can confirm that the following adaptation compiles fine:
SUBROUTINE rdgenc_purp(jyr)
INTEGER,INTENT(IN) :: jyr
INTEGER,PARAMETER :: JAYEAR=803,JB ...

The following code:
SUBROUTINE rdgenc_purp(jyr)
INTEGER,INTENT(IN) :: jyr
INTEGER,PARAMETER :: JAYEAR=803,JBYEAR=804,LXTZN=1714,
& MXNSEW ...

Thanks all.

It is likely errors in the code; definitely an ICE as it occurs when compiling.

Will get something together. Watch this space.

When running /64 /OPTIMISE compilation, I'm getting various floating point exception internal compiler errors cropping up. When running /64 /FU, compilation works.

As a relative beginner, I'm tryi ...

To answer the last question, one needs to know the purpose of the program.

The short test program fills a huge 4-D array with random numbers and does a little bit of averaging on a boundary. The r ...

Look into the memory needed for array ZNZNDAAV. It is too big for addressing using 32-bits. Likewise, it is too large even for 64-bits because it is a local variable that is allocated on the stack.
...

Understood, thanks.

This rectifies the compiler bug, which is the subject of the other thread. This thread, however, is referring to an access violation error in program execution.

I have now re ...

@mecej4

As noted in the other thread, I have been able to reproduce the error originally mentioned in the Stack Overflow link.

For posterity, the git repo containing the code is [url=https://bit ...

@mecej4 and Paul: thanks both for looking into this for me.

@mecej4 I have edited the code slightly in light of your comments; it now compiles fine without the SAVE attribute on array ddfuncval.
...

Related to
Compiling file: ddmodel14.for
C:\Projects\ML14_ERROR_20190731\ddmodel14.FOR(17) : comment 981 - Specifying the kind of the type LOGICAL with a constant is non-portabl ...

Please provide complete code that we can compile and link in order to run and reproduce the access error.

Thanks for the response. My apologies - will work on a reproducible example and return.
...

Hi all. I have a program which works fine when compiled in 32-bit, yet terminates with an access violation error when compiled as 64-bit.

The main thing that piques my senses is that the violation ...

@Paul: regarding porting of functions, is PRINT_I2 another like FILES8? One of our exes is throwing an exception (see attached image).

https://i.ibb.co/KjBd74k/ppm-missing-fn.png

Just an update: Silverfrost provided me with patched versions of FTN95 and sdbg64 and, once I'd recompiled, I was able to run the debugger with correct line numbers and breakpointing.

There's one o ...

Thanks for uploading so quickly; unfortunately exactly same issues: falls over with updated FTN95, no breakpoints with older FTN95.