不存在跟踪点时的 gdb 行为
在使用调试程序时，我遇到了一种特殊的行为。我正在远程服务器上运行一个进程并调试该程序。为此我可以使用跟踪点。
我没有指定任何跟踪点。现在，当我执行 tstart 来启动跟踪实验时，它不会 crib，我会得到 he (gdb) 提示。我做了这样的事情：
(gdb) target remote 172.24.0.7:1234
Remote debugging using 172.24.0.7:1234
0x00000000 in ?? ()
(gdb) info tra
No tracepoints.
(gdb) symbol-file /usr/local/bin/mybin1
Reading symbols from /usr/local/bin/ee/mybin1...done.
(gdb) info function
<< list of functions from mybin1 >>
(gdb) info tra
No tracepoints.
(gdb) tstart
(gdb)
我想知道这是否是 gdb 的预期行为？
提前致谢。
While debugging a program using I came across a pecular behavior. I am running a process on the remote server and debug the program. For this I can use tracepoints.
I did not specify any trace point. And now when I do a tstart to start the trace experiment, it does not crib, I get he (gdb) prompt back.I did something like this:
(gdb) target remote 172.24.0.7:1234
Remote debugging using 172.24.0.7:1234
0x00000000 in ?? ()
(gdb) info tra
No tracepoints.
(gdb) symbol-file /usr/local/bin/mybin1
Reading symbols from /usr/local/bin/ee/mybin1...done.
(gdb) info function
<< list of functions from mybin1 >>
(gdb) info tra
No tracepoints.
(gdb) tstart
(gdb)
I would like to know if this is an expected behavior for gdb?
Thanks in advance.
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从 gdb 7.2 开始，行为是发出错误，而不是开始跟踪。
之前的行为是开始追踪但什么也没积累，
这似乎就是你所看到的。
http://sourceware.org/ml/gdb-patches/2010-03 /msg00918.html
since gdb 7.2 the behaviour has been to emit an error, and not start tracing.
The previous behaviour was to start tracing but accumulate nothing,
which seems to be what you are seeing.
http://sourceware.org/ml/gdb-patches/2010-03/msg00918.html