At first, aggressive drivers drove faster than the posted speed limit. Then the police equipped themselves with radar guns to digitize the speed of cars. Then aggressive drivers got radar detectors in their cars. Then police states (pun intended) made radar detectors illegal. Now there are, no doubt, radar-detector detectors and/or radar-detector jammers. The auto-speed radar and optimizing compilers are both examples of a naturally occurring and evolving epsilon-delta process. Bill Fairchild Franklin, TN
----- Original Message ----- From: "Paul Gilmartin" <paulgboul...@aim.com> To: IBM-MAIN@LISTSERV.UA.EDU Sent: Wednesday, October 30, 2013 4:06:14 PM Subject: Re: Interesting? How _compilers_ are compromising application security On Wed, 30 Oct 2013 20:59:52 +0000, DASDBILL2 wrote: >PITA, yes, but not life-threateningly so. Consider the following: > >X = 0 >IF X=1 THEN > DC C'THIS IS A CONSTANT THAT IS NOW "REACHABLE" SO THE COMPILER WILL NOT >"DELETE" IT IN ORDER TO "OPTIMIZE" THE LOAD MODULE." >ENDIF > >or whatever the equivalent syntax is for FORTRAN or other language which >cannot tolerate an unreachable comment. > How smart is your optimizer? How smart will it be in the next release? I see a (what I mentioned earlier) a battle of wits aborning here. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
