Hex code of an error

Question

Runing Backtrace, It shows an error. What does the hexadecimal number represent at the end of a this line:

======= Backtrace: =========
/lib64/libc.so.6(__cxa_finalize+0x8e)[0x323aa337de]

Answer 1

The address at the end (0x323aa337de) is value of the program counter (the RIP register on x86-64). According to your debug symbols, this address is equal to __cxa_finalize+0x8e, i.e. 0x8e bytes past the start of the __cxa_finalize function within the C runtime shared library (/lib64/libc.so.6).

Answer 2

In Library, lib64/libc.so.6, function __cxa_finalize is currently being executed.
You are at 142 bytes (0x8E) in from the start of the function.
This is at memory address 0x323aa337de.

This is either where the program crashed, or the instruction you are currently looking at in the debugger (depending on context).