On Mon, Oct 1, 2018 at 4:52 PM, pba <papostoles...@gmail.com> wrote: > > I'm running into a situation where my program deadlocks due to (apparently) > a call to runtime.(*sigctxt).preparePanic which never exits (stack below). > > The program uses cgo and passes callbacks to the C library, this particular > panic seems to be triggered when the go callback returns to the C code. I > cannot debug the C code (binary dependency). > > Any suggestions on how to make the the program crash cleanly (i.e. panic and > exit) ? > > go version go1.11 darwin/amd64 > macOS Sierra (10.12.6) > > 2359 Thread_1644947 > + 2359 _sigtramp (in libsystem_platform.dylib) + 26 [0x7fff9656cb3a] > + 2359 runtime.sigtramp (in test) + 51 [0x4065fe3] > + 2359 runtime.sigtrampgo (in test) + 544 [0x4049000] > + 2359 runtime.sighandler (in test) + 1788 [0x404866c] > + 2359 runtime.(*sigctxt).preparePanic (in test) + 172 > [0x40475fc]
preparePanic is only called if your program has already gotten a signal. In this case it looks like preparePanic is itself causing a signal. There is some special code in Darwin that fires when a program does a division by zero or otherwise gets a SIGFPE signal; is it possible that this is happening in your program? Ian -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
