http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52765
--- Comment #9 from christophe.lyon at st dot com 2012-03-30 08:39:19 UTC --- (In reply to comment #2) > (In reply to comment #0) > > I am not sure this is really a bug (is building libstdc++ at -O0 > > supported?), > > Yes, the --enable-libstdcxx-debug configure option builds an alternative > libstdc++.so with -O0 (but I can't reproduce this when using that lib) I have experimented with this configure option. I didn't know about it: what is the intended way of using the debug libraries? I have add -L..../debug to my link command, and I do reproduce the problem in this context: - target arm-none-eabi - --disable-shared # Using default libs, built at -O2 $ arm-none-eabi-g++ cplx.cxx -o cplx.u -mcpu=cortex-a9 -std=c++0x $ qemu-system-arm -semihosting -cpu cortex-a9 -nographic -kernel ./cplx.u 23 (23,101) # Using debug libs, built at -O0 $ arm-none-eabi-g++ cplx.cxx -o cplx.u -mcpu=cortex-a9 -std=c++0x -L .../lib/debug $ qemu-system-arm -semihosting -cpu cortex-a9 -nographic -kernel ./cplx.u 23 (0,101)
