[Bug win32/14685] New: semantic error found in windows-nat.c:986 causes permanant hang for debuggee process

[Bug win32/14685] New: semantic error found in windows-nat.c:986 causes permanant hang for debuggee process

[jojelino at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14685

             Bug #: 14685
           Summary: semantic error found in windows-nat.c:986 causes
                    permanant hang for debuggee process
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: critical
          Priority: P2
         Component: win32
        AssignedTo: unassigned@sourceware.org
        ReportedBy: jojelino@gmail.com
    Classification: Unclassified


Created attachment 6673
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6673
proposed patch

http://sourceware.org/git/?p=gdb.git;a=commit;f=gdb/windows-nat.c;h=8094fa2e73f05bd42a7005fd005aeaa26ea20c26

In this commit, handle_output_debug_string modifies dwThreadId of
current_event. and there is no way to figure out which thread actually sent the
debug event after that. it would be possible unless dwThreadId hasn't modified.
In the result, there isn't any ContinueDebugEvent call for the thread that sent
the debug event to the debugger. make the debuggee hang.

So, I propose the patch which fixes the problem. please review it.

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[Bug win32/14685] semantic error found in windows-nat.c:986 causes permanant hang for debuggee process

[jojelino at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14685

jojelino at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |i686-pc-cygwin
           Priority|P2                          |P1
               Host|                            |i686-pc-cygwin
              Build|                            |i686-pc-cygwin

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[Bug win32/14685] semantic error found in windows-nat.c:986 causes permanant hang for debuggee process

[jojelino at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14685

--- Comment #1 from jojelino at gmail dot com 2012-10-08 21:30:27 UTC ---
To reproduce,

debug following c source

int main(){abort();}

gdb --args a
r
#SIGABRT would received.
s
#And debuggee would hang forever. same thing happen for debugger too.

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[Bug win32/14685] semantic error found in windows-nat.c:986 causes permanant hang for debuggee process

[tromey at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14685

Tom Tromey <tromey at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at redhat dot com

--- Comment #2 from Tom Tromey <tromey at redhat dot com> 2012-10-26 18:24:09 UTC ---
For best results, follow the contribution instructions here
http://sourceware.org/gdb/contribute/

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[Bug win32/14685] semantic error found in windows-nat.c:986 causes permanant hang for debuggee process

[jojelino at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14685

gee <jojelino at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #6673|0                           |1
        is obsolete|                            |

--- Comment #3 from gee <jojelino at gmail dot com> 2012-10-27 12:48:41 UTC ---
Created attachment 6701
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6701
proposed patch

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