Did you compile with -O0? A function may be inlined and a symbol may be optimized away with -O1 and above.
Bingfeng > -----Original Message----- > From: gcc-ow...@gcc.gnu.org [mailto:gcc-ow...@gcc.gnu.org] On > Behalf Of Vincent R. > Sent: 24 February 2009 15:38 > To: gcc@gcc.gnu.org > Subject: Instrument gcc > > Hi, > > even if I am simple mortal I would like to understand or at > least follow > what is going on with gcc. > Generally when I run gdb and try to breakpoint inside a > function I get a > undefined symbol or something like that. > I suppose this is because gcc is not a simple static exe but > depends on > other binaries (g++, cpp, ...). > So my question is how can I debug step by step gcc ? > Let's say for instance I want to breakpoint the function > init_exception_processing located in gcc/gcc/cp > and related to c++ exceptions > > This GDB was configured as "i486-linux-gnu"... > (gdb) b init_exception_processing > Function "init_exception_processing" not defined. > Make breakpoint pending on future shared library load? (y or [n]) > > What is the magical trick to be able to follow what is going on. > > Thanks > > >
