Article View: comp.lang.eiffel
Article #1197Re: Beware of "C" Hackers -- A rebuttal to Bertrand Meyer
From: Kazimir Kylheku
Date: Sun, 24 Mar 1996 22:18
Date: Sun, 24 Mar 1996 22:18
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2667 bytes
In article <31557321.6A8B@iadfw.net>, Larry Weiss <lfw@iadfw.net> wrote: >Kazimir Kylheku wrote: > > > > The above are ones you wouldn't want to redefine anyway. I doubt you could > > make a better strcpy() or abs() than compiler-generated inline code! > > -- > >You may just want or need learn how many invocations of that logic occur. >Remember, I'm asking how does a hacker feel about the inability to depend on these >calls actually executing an easily replaceable or patchable code segment. >I suspect that a hacker would take your last sentence as a challenge, and >then if he/she were good enough, well who knows? > >I do understand the software engineer's needs (although even in that domain I >like to think that I can readily employ the memory leak-detector tools that rely on >not inlined malloc() free() code generation). Although while wearing my You should be able to. I don't think that malloc and free are commonly inlined. Though if they are inlined in a library to which you don't have sources, you are a poor soul. Library creators should watch out for this. I think that a reasonable practice is to _not_ inline the functions when optimization is not turned on. GCC behaves this way, in addition to providing an explicit switch. Conscientious developers build two versions of a library. For example, the ncurses distribution will build a debugging version of the library as well as an optimized production version. Even if malloc() were a builtin, I could count on the GCC-compiled debugging library to actually use the call. >engineer's cap, if there were really good runtime efficiency gains to be had >by inlining those calls .... well it would be a tough decision. (and the problem >there is with my 3rd party library code where the inline/not-inlined decisions >are already imposed, either helping or restricting my leak-detector. Having only one version, with all the inline business in place is a big bummer. Here is where the hacker as well as engineer in me would get pretty upset! --
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Path: arc1-ca.pugleaf.net!keats.ugrad.cs.ubc.ca!not-for-mail From: c2a192@ugrad.cs.ubc.ca (Kazimir Kylheku) Newsgroups: comp.lang.eiffel,comp.lang.c,comp.lang.c++,comp.object,comp.software-eng Subject: Re: Beware of "C" Hackers -- A rebuttal to Bertrand Meyer Date: 24 Mar 1996 14:18:54 -0800 Organization: Computer Science, University of B.C., Vancouver, B.C., Canada Message-ID: <4j4hoeINNfoi@keats.ugrad.cs.ubc.ca> References: <1995Jul3.034108.4193@rcmcon.com> <314DADD4.3DE@oc.com> <4j3ohvINN4vu@keats.ugrad.cs.ubc.ca> <31557321.6A8B@iadfw.net> NNTP-Posting-Host: keats.ugrad.cs.ubc.ca