newB: How to debug system lib

[Russell Shaw]

Hi,
I linked my program with:

   gcc -g -O0 -lm  -o test  main.o

ldd test gives:

libm.so.6 => /usr/lib/debug/libm.so.6 (0x40018000)
         libc.so.6 => /usr/lib/debug/libc.so.6 (0x4003a000)
         /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)

I had: LD_LIBRARY_PATH="/usr/lib/debug"


In gdb, list 'ungetc' (a gnu libc function) gives:

   No line number information available for address 0x400af9a0 <ungetc>

I cannot step into the function either.

Is there a way of doing this without statically linking?

(debian 2.6.8.1, libc6 2.3.2.ds1-17, gcc 3.4.2)