gdb共享库没有调试信息

Question

i try to debug a program for find to floating point exception location on beaglebone black debian i installed libc6 and libc6-dbg but still

From        To          Syms Read   Shared Object Library
0xb6fda7c0  0xb6ff32b0  Yes (*)     /lib/ld-linux.so.3
0xb6f24200  0xb6f8af00  Yes (*)     /lib/arm-linux-gnueabi/libm.so.6
0xb6f06668  0xb6f17e74  Yes (*)     /lib/arm-linux-gnueabi/libgcc_s.so.1
0xb6dd44a0  0xb6eca348  Yes (*)     /lib/arm-linux-gnueabi/libc.so.6
(*): Shared library is missing debugging information.

seems like this.

and my debug directory is: The directory where separate debug symbols are searched for is "/usr/lib/debug"

floating point exception appear like this

Program received signal SIGFPE, Arithmetic exception. 0xb6de9a98 in raise () from /lib/arm-linux-gnueabi/libc.so.6

Answer 1

You appear to be using GDB with remote debugging, possibly on an x86 host.

i installed libc6 and libc6-dbg

You need to install libc6-dbg for the arm (matching your arm target libc build). Installing libc6-dbg for host does you no good.