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In case SA_SIGINFO flag is given, the signal handler may change the context and the application is supposed to pick up from the changed context. So far we don't do that, so the context given to the signal handler is basically read-only, unless the signal handler calls setcontext or swapcontext. For a start, restore the thread's signal mask from the uc_sigmask value of the context given to the signal handler. If that's feasible for Cygwin, we restore the entire context from the context changed by the signal handler in a followup patch. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cygwin documentation is available on the net at https://cygwin.com You might especially be interested in https://cygwin.com/faq/faq.html#faq.programming.building-cygwin