calling sigaltstack, stack base is 0x........
setting sigaction
Syscall param sigaction(act) contains uninitialised or unaddressable byte(s)
   at 0x........: __libc_sigaction (...libc...)
   Address 0x........ is on thread 1's stack
res = 0
raising the signal
caught signal, local var is on 0x........
done

ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
malloc/free: in use at exit: 8192 bytes in 1 blocks.
malloc/free: 1 allocs, 0 frees, 8192 bytes allocated.
For a detailed leak analysis,  rerun with: --leak-check=yes
For counts of detected errors, rerun with: -v