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Some MPI (summit) create sigusr2, so trap that
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@ -628,6 +628,7 @@ void Grid_debug_handler_init(void)
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sigaction(SIGSEGV,&sa,NULL);
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sigaction(SIGTRAP,&sa,NULL);
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sigaction(SIGBUS,&sa,NULL);
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sigaction(SIGUSR2,&sa,NULL);
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feenableexcept( FE_INVALID|FE_OVERFLOW|FE_DIVBYZERO);
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