compiles fine, a.exe freezes

[venomousmule]

I have a program that compiles fine in gfortran. When I execute the program runs and then freezes. It's not taking up CPU resources or memory, it just ceases to keep going. The program appears to be hanging on this line:

write (str1,'(I1)') radius

which doesn't make sense as I've used this line in another test program just fine (with the exact same declarations/values)

What confuses me is that the program compiles and runs without errors, it just stops at that point. Any ideas?

 

[xwb]

How is str1 declared and what is radius?

If radius is more than 1 digit and str1 has been declared to only hold 1 character, you're overwriting the local variable space and possibly the stack frame which would result in the program returning to somewhere else, not necessarily the routine that called it.

 

[venomousmule]

thanks for the response:

str1 is declared as a character, radius is only 1 digit.

I think there may be some issue here beyond programming. Since the last post the program has been run -unchanged- and now a.exe hangs right before closing an output file. Is this a gfortran compiler issue? I'm completely stumped, on the bright side, it is outputting the correct information.

 

[xwb]

Try declaring str1 as character*2.

Alternatively, instead of the write statement,

 str1 = char(radius + 48)