Date: Thu, 29 Jun 1995 17:39:39 +0200 (MET DST) From: J Wunsch <j@uriah.heep.sax.de> To: witr@rwwa.com (Robert Withrow) Cc: freebsd-hackers@freebsd.org (FreeBSD hackers) Subject: Re: gcc 2.7.0 and FreeBSD 2.0.5 Message-ID: <199506291539.RAA06569@uriah.heep.sax.de> In-Reply-To: <199506291444.KAA03119@spooky.rwwa.com> from "Robert Withrow" at Jun 29, 95 10:44:26 am
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As Robert Withrow wrote:
>
> Out of curiosity, how do you get correct (i.e. posix) behavior
> from shared libraries without weak symbols?
>
> If I define my own ``read()'' routine, other posix routines
> which ``act as if they internally call read'' won't call
> *my* read() will they? (In FBSD2.0.5 I mean). If they do,
> this is broken (non-posix) behavior.
Do you mean something like this?
j@uriah 441% cat > foo.c
#include <stdio.h>
int read(int fd, char *buf, unsigned long l)
{
printf("read() called\n");
return 0;
}
int main(void)
{
char b[100];
printf("main()\n");
fgets(b, 100, stdin);
return 0;
}
^D
j@uriah 442% cc -o foo foo.c
j@uriah 443% ./foo
main()
read() called
--
cheers, J"org
joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/
Never trust an operating system you don't have sources for. ;-)
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