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In addition to a number of out-of-band notifications, the response to a GDB/MI command includes one of the following result indications:
"^done" [ "," results ]
The synchronous operation was successful,
results are the return
This result record is equivalent to ‘^done’. Historically, it was output instead of ‘^done’ if the command has resumed the target. This behaviour is maintained for backward compatibility, but all frontends should treat ‘^done’ and ‘^running’ identically and rely on the ‘*running’ output record to determine which threads are resumed.
GDB has connected to a remote target.
"^error" "," "msg=" c-string [ "," "code=" c-string ]
The operation failed. The
msg=c-string variable contains
the corresponding error message.
If present, the
code=c-string variable provides an error
code on which consumers can rely on to detect the corresponding
error condition. At present, only one error code is defined:
Indicates that the command causing the error does not exist.
GDB has terminated.