Emulator Trap

Sent when an emulator instruction or emulation trap occurs. Present on macOS and BSD systems (signal 7) but not defined on Linux. Historically used to signal emulated instructions on systems running code for a different architecture.

References

developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/sigaction.2.html
man.freebsd.org/cgi/man.cgi

In this namespace

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SIGALRM SIGBUS SIGCHLD SIGCLD SIGCONT SIGEMT SIGFPE SIGHUP SIGILL SIGINFO SIGINT