[Bug 20534] New: gdb proxy mode: allow interrupt from command line (e.g. Ctrl-C)

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=20534

           Summary: gdb proxy mode: allow interrupt from command line
                    (e.g. Ctrl-C)
           Product: Wine
           Version: 1.1.32
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: P2
         Component: winedbg
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: pebolle at tiscali.nl


Created an attachment (id=24479)
 --> (http://bugs.winehq.org/attachment.cgi?id=24479)
A really simple way to allow SIGINT to break the debuggee

0) In gdb proxy mode an interrupt from the command line (e.g. Ctrl-C), which
should break the application debugged and bring up the gdb prompt, actually
kills winedb.exe (and the program being debugged). This leaves the terminal and
the gdb session in a confusing state (i.e. might need a "stty echo"). This
mostly makes running gdb proxy mode pointless.

1) Example session:
$ wine winedbg --gdb notepad.exe
GNU gdb (GDB) Fedora (7.0-3.fc12)
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
0x7b87ab8c in DbgBreakPoint () at ../../include/winternl.h:1968
1968    static inline void WINAPI DbgBreakPoint(void) { __asm__
__volatile__("int3"); }
Missing separate debuginfos, use: debuginfo-install
wine-common-1.1.32-1.fc12.1.noarch
Wine-gdb> c
Continuing.
trying to process verbose packet: Cont?
trying to process verbose packet: Cont;c
^CRemote communication error: Connection reset by peer.
Wine-gdb> [wine-1.1.32]$ quit
A debugging session is active.

    Inferior 1 [Remote target] will be killed.

Quit anyway? (y or n) EOF [assumed Y]
putpkt: write failed: Broken pipe.

1) A trivial patch, which I'll try to attach shortly, will give this behaviour:
$ wine winedbg --gdb notepad.exe
GNU gdb (GDB) Fedora (7.0-3.fc12)
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
0x7b87ab2c in DbgBreakPoint () at ../../include/winternl.h:1968
1968    static inline void WINAPI DbgBreakPoint(void) { __asm__
__volatile__("int3"); }
Missing separate debuginfos, use: debuginfo-install
wine-common-1.1.32-1.fc12.1.noarch
Wine-gdb> c
Continuing.
trying to process verbose packet: Cont?
trying to process verbose packet: Cont;c
^C
Program received signal SIGTRAP, Trace/breakpoint trap.
0x68000830 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
Wine-gdb>

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