gdb 挂载动态链接库符号表

(gdb) info sharedlibrary xcast
From                To                  Syms Read   Shared Object Library
0x00007fd0dc6db000  0x00007fd0dd1e857a  Yes (*)    /usr/local/lib/

(gdb) add-symbol-file  /usr/local/lib/ 0x00007fd0dc6db000