From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Tobler To: Dale Johannesen Cc: GCC Subject: Re: bootstrap failure on darwin, compare stages Date: Fri, 21 Sep 2001 13:21:00 -0000 Message-id: <3BAB9FB7.F2D430EC@pop.agri.ch> References: <200109211957.f8LJvaR02906@scv2.apple.com> X-SW-Source: 2001-09/msg00854.html Dale Johannesen wrote: > I usually approach it this way: > Get a "good" compiler (built with cc, usually) and the "bad" (stage2) > compiler. > Compile the file that differs with both compilers using -da. -da ? > Compare the dump files to get some idea what phase the problem is in. -v 'make -s file with asm output' (don't know the switch right now.)? > Step through the compilers in parallel with the debugger, to find the place > where the bad code is. I don't like to say this, but with gdb I have my probs, I remember vc++, sorry. I find it easier to dbg a file which fails than a comparison stage. Here I'm unsure who/what is responsible for. > I haven't bootstrapped recently, I'll try it now. Good luck Andreas and thx!!