gdb-discard-unordered-replies

gdb-discard-unordered-replies is a variable defined in `gdb-mi.el'.
Its value is

t

Documentation:
Non-nil means discard any out-of-order GDB replies.
This protects against lost GDB replies, assuming that GDB always
replies in the same order as Emacs sends commands. When receiving a
reply with a given token-number, assume any pending messages with a
lower token-number are out-of-order.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.4 of Emacs.