Overview:

When attempting to cast a gdb.Value object to a 128bit python integer, the following error is seen:

Python Exception <class 'gdb.error'>: Value cannot be represented as integer of 8 bytes.

This issue is encountered with gdb 16.3 only when used without client/server mode. This error has been encountered on arm64.

NOTE: This bug may be related to a similar bug I filed here: https://sourceware.org/bugzilla/show_bug.cgi?id=33365

Steps to reproduce:

Below are the steps to reproduce this issue with gdb 16.3:

1) Begin a gdb debugging session (without client server mode) with any test binary using the above specified version of gdb.
2) Add a breakpoint.
3) Run the program.
4) Once the breakpoint is hit, enter the following commands:

python
reg = "$v0.q.u[0]"
v = gdb.parse_and_eval(reg)
int(v)
end

Actual Results:
Upon running the above commands, gdb printed out the following error message:

Python Exception <class 'gdb.error'>: Value cannot be represented as integer of 8 bytes.
Error occurred in Python: Value cannot be represented as integer of 8 bytes.

Expected Results:
The expected result is for gdb to successfully perform the cast and return the gdb prompt.

Build Date and Hardware:
Release 16.3 on Ubuntu 22.04.5 LTS