sanitizers: use handle_sig*=2 explicitly, so *san handle thos
"detect_leaks=0:" \
"allocator_may_return_null=1:" \
"allow_user_segv_handler=0:" \
+ "handle_segv=2:" \
+ "handle_sigbus=2:" \
+ "handle_sigill=2:" \
+ "handle_sigfpe=2:" \
"exitcode=" HF_XSTR(HF_SAN_EXIT_CODE)
/* --{ ASan }-- */
