Hi All ,
i have following query regarding lib-unwind stack unwinding, when frame
pointer are omitted using -O3 optimization using gcc.
How can we get lowest address of stack frame causing segfault using
libunwind
Note : Here we consider stack grows from Higher address to Lower Address.
#define UNW_LOCAL_ONLY
#include <libunwind.h>
void show_backtrace (void) {
unw_cursor_t cursor; unw_context_t uc;
unw_word_t ip, sp;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
while (unw_step(&cursor) > 0) {
unw_get_reg(&cursor, UNW_REG_IP, &ip);
unw_get_reg(&cursor, UNW_REG_SP, &sp);
printf ("ip = %lx, sp = %lx\n", (long) ip, (long) sp);
}
}
Thanks
Pallav Singh
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