On Tue, Feb 28, 2012 at 10:25 PM, Greg Clayton <[email protected]> wrote:
> > Ironically the symbolizer works great on gcc-compiled binaries, > > but fails on clang-compiled binaries. > > It provides some info but it's dead wrong (point into some > > random STL source files). > > objdump -dlS shows > > correct info for the binaries, and I guess you mostly work with > > clang-compiled binaries. > > So are there any known problems? What may I be missing? > > Not that we know of. Clang binaries work great on MacOSX and symbolicate > just fine. If you have any quick examples where address lookups fail, > please send me examples off the list. > > I've tracked down the problem. When I build the lookup example as $ clang++ main.cpp -I../../include -llldb -g -frtti It works. However when I build it as: $ clang++ main.cpp -I../../include -llldb -g -frtti *-fPIE -pie* It fails to symbolize itself. While objdump -dSl symbolizes it (shows line numbers inside of functions). If I build a program with gcc with -fPIE -pie, it also able to symbolize itself (with lldb). So, the problem seems to be in tricky interaction of clang, lldb and -pie. It's all Linux/amd64 and tip clang.
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