The current trace snapshot (a.k.a. frame) number, or -1 if no snapshot is selected.
The tracepoint for the current trace snapshot.
The line number for the current trace snapshot.
The source file for the current trace snapshot.
The name of the function containing $tracepoint.
Note: $trace_file is not suitable for use in printf, use output instead.
Here's a simple example of using these convenience variables for stepping through all the trace snapshots and printing some of their data.
(gdb) tfind start (gdb) while $trace_frame != -1 > output $trace_file > printf ", line %d (tracepoint #%d)\n", $trace_line, $tracepoint > tfind > end |