# Steady state dynamics randomly terminates without error

**URL:** <https://calculix.discourse.group/t/steady-state-dynamics-randomly-terminates-without-error/1279>\
**Category:** Uncategorized\
**Created:** [October 5, 2022, 5:01pm UTC](https://calculix.discourse.group/t/steady-state-dynamics-randomly-terminates-without-error/1279 "2022-10-05T17:01:18Z")\
**Posts on this page:** 1\
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**Author:** ![fgr](https://avatars.discourse-cdn.com/v4/letter/f/f4b2a3/32.png) [@fgr](https://calculix.discourse.group/u/fgr)\
**Post date:** [February 27, 2023, 7:45pm UTC](https://calculix.discourse.group/t/steady-state-dynamics-randomly-terminates-without-error/1279/12 "2023-02-27T19:45:25Z")

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Some of the modules in ccx have been written in FORTRAN 66. Compiling in Windows with GFORTRAN 11.2 I was warned to raise the flag -std=legacy to avoid unexpected program execution in those modules. I haven’t traced where those module belongs and if they still are active. I wont claim that’s the problem but it smells like a compiler problem.

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