Debugging Fortran 11 in Windows 7

[Pablo_Guerron]

Hi,

The debugger (Fortran 11 Windows 7 (64 bit)) crashes when running the following code:

open (unit = 11,file = 'dataqe.txt')

do i = 1,204

read (11,'(3f24.17)') ourdata(:,i)

enddo

close (11)

I get the following error:

forrtl: severe (157): Program Exception - access violation

The exact same code in Fortran 10 and Windows XP (64 bit) runs smoothly in Debug or Release modes.

Any idea why this is happening?

Thanks,

Pablo

[mecej4]

It is quite likely that the error is caused by the portions of the code that you have not shown, or in the data file.

How is the array declared? What does the data file contain? Where is it located? In which line does the access violation occur? Which version of the compiler did you use?

[nvaneck]

I've found the 64bit debugger to be probelmatical in other ways. It can't seem to associate the lines of code with break points for instance.I think I had crash problems, too, but it's been so long since I used it I can't remember. I haven't tried it since moving to release 12, so perhaps it's better now.

Since I generate release code for both 32bit and 64bit versions, I now always use the 32bit version for debugging.

[Pablo_Guerron]

This are the declarations:

integer, parameter :: length_sample = 204

integer, parameter :: nofp = 15, nobs = 3, noftvp = 15

real (dp), dimension (nobs,length_sample) :: ourdata

The data are stored in a text file. The numbers are double precision.

Every time I set a breaking point at the "end do" line, the error happens.

Pablo

[Pablo_Guerron]

Thanks for the suggestion.

[Steven_L_Intel1]

The debugger is not "crashing", it is your program that is getting an error. If you can attach a ZIP of your project, including everything needed to build and run the program, I'll be happy to take a look.

[Pablo_Guerron]

It seems it is a problem with the 64 bit debugger and break points. The 32-bit does not return any error.