GNU libc confusion with symbols undefined.
Brown, Rodrick
rodrick.brown at citi.com
Fri Sep 18 14:21:58 UTC 2009
I'm trying to understand the following here
I have a simple test program that calls memcpy/malloc/printf
int
main(int argc, char **argv)
{
char * p = malloc(10);
memcpy(p,"Hello",6);
printf("%s\n", p);
}
When looking at the symbol list why are the following routines undefined? And why is it referncing GLIBC_2.2.5?
$ nm /tmp/f |grep ' U '
U __libc_start_main@@GLIBC_2.2.5
U malloc@@GLIBC_2.2.5
U memcpy@@GLIBC_2.2.5
U printf@@GLIBC_2.2.5
$ rpm -qa |grep -i glibc
glibc-2.3.4-2.41
glibc-common-2.3.4-2.41
glibc-2.3.4-2.41
I really can't find an explination for this and was wondering if someone could clear it up.
Thanks.
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