*string_ptr[4], pointer of chars

You only have 10. What's the value of nbdy_nodes?

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Originally Posted by Elysia

You only have 10. What's the value of nbdy_nodes?

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Sorry, I meant to put 10 for this thread but copied my code directly. The nbdy_nodes is coherent with my allocations in the real code; let's pretend it were 10 as in this forum though

cfd

Alright, then it's likely that the memory is corrupted somehow by BDY_FLAG.
Comment it out, see if it fixes anything.
If it does, then the easiest way to catch your error is to use a debugger or check for buffer overflows.

Yes, indeed when I do not call the function BDY_FLAG I get all running fine;

I debugged it and I was entering a part of memory not allocated!

Man, this can give you a lot of headaches!

thank you very much for helping

Best
CFD