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Asked: 2026-05-17T20:03:27+00:00

I have been spending some time in debugging a programme which gives segmentation fault.

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I have been spending some time in debugging a programme which gives segmentation fault. The bug is quite indeterministic and intermittent, which is annoying. I narrowed it down to the calling of strtok(). I suspect that it is the calling of strtok() to split string in two different threads that causes the segmentation fault. Can I call strtok() in two different threads?

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1 Answer

  1. Editorial Team

    strtok() is not reentrant so it should not be used from threaded applications, use strtok_r() instead.

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