Slow symbol resolution in gdb 7.6 with C++

[ikonst]

Hey,

Did anyone else notice *VERY* slow (> 30s) global symbol resolution when debugging with gdb 7.6 from NDK r10?

e.g. “print some_global_func” takes > 30 seconds to complete, but only from within certain stack frames which are within a class member function. It seems to try to resolve it as a class member in some very inefficient way.

Further proof:
print ::some_global_func -> INSTANTANEOUS
print this->some_global_func –> PAINFULLY SLOW (>30 s)

Did someone try building GDB with this patch? It looks promising:
https://sourceware.org/bugzilla/show_bug.cgi?id=15519

If not, how easy is it to build GDB for Windows? Are there many Android patches that I should apply so it’ll play nice with Android’s weird libc/linker etc.?

Thanks,
Ilya

[support]

Hi,

We did test this specific patch. Last time we built the Android GDB was around NDK 8 and the build process was fairly straight-forward using a MinGW/MSYS environment. Please feel free to give it a try and if you encounter strange problems, feel free to post here so that we can try to help you.

[ikonst]

Already did, and it indeed helps.

Here’s my build:
https://github.com/ikonst/gdb-7.7-arm-linux-androideabi

Filed an issue:
https://code.google.com/p/android/issues/detail?id=78239

[Author]

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