Re: obfuscation

From:
James Kanze <james.kanze@gmail.com>
Newsgroups:
comp.lang.c++
Date:
30 May 2007 05:48:39 -0700
Message-ID:
<1180529318.957923.152020@m36g2000hse.googlegroups.com>
On May 30, 10:45 am, Zeppe
<zep_p@.remove.all.this.long.comment.yahoo.it> wrote:

JohnQ wrote:


    [...]

Anyway, under linux, the debug symbols are activated by -g, so if you
compile without it they shouldn't be included. And the the command

strip executable_name

will remove all the names of all the exported symbols, so there will be
no more readable information.


That's what I always thought, but a quick check (under Solaris)
shows that it just ain't true. The names are no longer visible
to nm (and the executable is noticeably smaller), but they still
show up using strings.

For windows I guess it's similar, look at
the "c++ options" and "code generation" options in visual studio for
example, there should be some "do no include debug information".

So, the question is: are function names and class names not visible in
non-debug code? (That is a/the concern of mine).


they are not, provided you tell the compiler that you don't need him to
preserve the function names. (well, not sure if you can delete also the
names of the function linked dynamically on shared libraries, though...
probably not).


Obvoiusly not, I'd say. Also, you can't delete the names of
types, at least not if type_info::name() is still going to work.

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