问题
When I try to debug my core-dump via gdb either in Qt or directly from terminal, it gives me bunches of warnings like below. Therefore my backtrace is not working properly.
warning: Unable to find libthread_db matching inferior's thread library, thread debugging will not be available.
warning: Unable to find libthread_db matching inferior's thread library, thread debugging will not be available.
warning: Could not load shared library symbols for ). Do you need "set solib-search-path" or "set sysroot"?
Is this because my executable built without debugging symbols or is the problem about glibc? Do you have any solution to fix this?
回答1:
Is this because my executable built without debugging symbols or is the problem about glibc?
This has nothing to do with your executable.
GDB needs a version of libthread_db.so.1 that matches your libpthread.so.0, and is not finding such version.
Probable causes (from most to least probable):
- You have stripped libpthread.so.0 (don't do that).
- You've upgraded your glibc, but the upgrade was incomplete and did not update
libthead_db.so.1 - You are using some kind of cross-compilation environment, and really do need to
set solib-search-pathorset libthread-db-search-pathsuch that GDB can find a matchinglibthread_db.so.1
You can see which versions of libthread_db GDB is trying with set debug libthread-db 1.
来源：https://stackoverflow.com/questions/14364781/gdb-debugging-warnings