MI: Orphaned output for core file debugging

["Marc Khouzam" <marc dot khouzam at ericsson dot com>]

Hi,

I'm working on supporting core-file debugging in DSF-GDB.
I noticed a little bug that does _not_ affect me, but
I thought I would bring put it out there for general
knowledge.

In HEAD and 6.8 (didn't try earlier), when using the -c option
on the command-line to specify the core file, when in MI mode,
there is a 'orphaned' frame output that is output on the first
MI command. In the session below you can see that my first
command is "-gdb-set confirm" and it has a frame as part
of its output.  I ran the same command right after and got
the proper output.

(This does not affect me because I'm going to use "-target-select core"
instead of the -c option.)

I think this output may need to be in a *stopped event.
This would be quite nice for the "-target-select core" case too,
instead of relying on the ^connected output.

Thanks

Marc


> gdb -i mi -c core.32141 a.out 
~"GNU gdb 6.8\n"
~"Copyright (C) 2008 Free Software Foundation, Inc.\n"
~"License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>\n"
~"This is free software: you are free to change and redistribute it.\n"
~"There is NO WARRANTY, to the extent permitted by law.  Type \"show
copying\"\n"
~"and \"show warranty\" for details.\n"
~"This GDB was configured as \"i686-pc-linux-gnu\"...\n"
&"\nwarning: "
&"Can't read pathname for load map: Input/output error.\n"
~"Reading symbols from /usr/lib/libstdc++.so.6..."
~"done.\n"
~"Loaded symbols for /usr/lib/libstdc++.so.6\n"
~"Reading symbols from /lib/libm.so.6..."
~"done.\n"
~"Loaded symbols for /lib/libm.so.6\n"
~"Reading symbols from /lib/libgcc_s.so.1..."
~"done.\n"
~"Loaded symbols for /lib/libgcc_s.so.1\n"
~"Reading symbols from /lib/libc.so.6..."
~"done.\n"
~"Loaded symbols for /lib/libc.so.6\n"
~"Reading symbols from /lib/ld-linux.so.2..."
~"done.\n"
~"Loaded symbols for /lib/ld-linux.so.2\n"
&"Failed to read a valid object file image from memory.\n"
~"Core was generated by `/local/home/lmckhou/testing/a.out'.\n"
~"Program terminated with signal 5, Trace/breakpoint trap.\n"
~"[New process 32141]\n"
(gdb) 
-gdb-set confirm
^done,frame={level="0",addr="0x080484eb",func="main",args=[],file="b.cc"
,fullname="/local/home/lmckhou/testing/b.cc",line="17"}
(gdb) 
-gdb-set confirm
^done
(gdb)