Fix a SEGFAULT that was hidden by our waitpid() calls. #422
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When a subprocess terminates with a successful return code, it might still have been terminated by a signal, one signal would be SIGSEGV. Arrange our code to report when that happens. This happened in initialisation of the streaming module when trying to call setvbuf on a un-assigned file descriptor. This is fixed in follow.c when preparing the call.
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When a subprocess terminates with a successful return code, it might still have been terminated by a signal, one signal would be SIGSEGV. Arrange our code to report when that happens.
This happened in initialisation of the streaming module when trying to call setvbuf on a un-assigned file descriptor. This is fixed in follow.c when preparing the call.