d12c48cad5
The stack validation heuristic is counter-productive in this case, as the unaligned address is most likely the thing that caused the signal in the first place.
22 lines
390 B
C
22 lines
390 B
C
#include <signal.h>
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#include <stdint.h>
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#include <unistd.h>
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void sigbus_handler(int signo) { _exit(47); }
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int target_function() { return 47; }
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int main() {
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signal(SIGBUS, sigbus_handler);
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// Generate a SIGBUS by deliverately calling through an unaligned function
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// pointer.
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union {
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int (*t)();
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uintptr_t p;
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} u;
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u.t = target_function;
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u.p |= 1;
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return u.t();
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}
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