title:setjmp clobber warnings in duk_js_executor.c
desc:"Unsure why these happen:\n\n\
duk_js_call.c:546:6: warning:variable \xE2\x80\x98need_setjmp\xE2\x80\x99 might be clobbered by \xE2\x80\x98longjmp\xE2\x80\x99 or \xE2\x80\x98vfork\xE2\x80\x99 [-Wclobbered]\n\
duk_js_call.c:547:14: warning:variable \xE2\x80\x98old_jmpbuf_ptr\xE2\x80\x99 might be clobbered by \xE2\x80\x98longjmp\xE2\x80\x99 or \xE2\x80\x98vfork\xE2\x80\x99 [-Wclobbered]\n\
duk_js_call.c:548:15: warning:variable \xE2\x80\x98old_errhandler\xE2\x80\x99 might be clobbered by \xE2\x80\x98longjmp\xE2\x80\x99 or \xE2\x80\x98vfork\xE2\x80\x99 [-Wclobbered]\n\n\
Each of these is written before the setjmp() happens and are not updated\n\
afterwards. So they should have a definite value?"