Causing a crash for testing purposesEdit

Created 10/23/2006, updated 5/18/2017

Faking a SIGBUS

In brief:

raise(SIGBUS);

raise returns -1 on failure and 0 on success, so you should check the return value.

Causing a real SIGBUS

// cause a crash
id *ref = NULL;
*ref = @"foobar";

Faking a SIGSEGV

raise(SIGSEGV);

Causing a real SIGSEGV

I'm not actually sure how to trigger a real SIGSEGV in a reliable fashion that works in both debug and release builds. For example the following might work in debug builds but fail on release builds:

char foo[10];
foo[100000] = 'a';