Re: [cdt-dev] target unexpectedly stops on a SIGINT while setting breakp

[John Cortell <rat042@xxxxxxxxxxxxx>]

I found an explanation by googling the error msg

  

http://sourceware.org/ml/gdb-patches/2008-05/msg00264.html

I'm guessing  this developer's patch was never accepted. Maybe
Mikhail can come to the rescue from his new position :-)

John

At 05:52 PM 3/2/2010, John Cortell wrote:
> I'm encountering an intermittent
> problem setting a breakpoint while the target is running on mingw/gdb
> 7.0. The target ends up becoming unexpectedly suspended because of a
> SIGINT.
>
> The target program is in the middle of a Win32 Sleep() call when I try to
> set the breakpoint. The next thing I expect to happen is that the
> breakpoint is hit. Instead, the target stops in an unexpected location.
> Interestingly enough, gdb seems to warn the debugger that this is going
> to happen (see bold/red trace line below). Any gdb experts out there know
> why this is happening?
>
> Command 103 is when I hit resume in the debugger. The target program
> moves on to the Sleep() call.
> Command 104 is when I tell the debugger to set a breakpoint (while the
> target is running). The debugger has, of course, silently interrupted GDB
> in order to do so
> Command 105 is when the debugger silently resumes the target after having
> set the breakpoint
>
> Note that the foreboding response to 103 only happens after 104.
>
> John
>
> 103-exec-continue
> 103^running
> *running,thread-id="all"
> (gdb) 
> =thread-created,id="2",group-id="3828"
> ~"[New Thread 3828.0x12ac]\n"
> [New Thread 3828.0x12ac]
> ~"[Switching to Thread 3828.0x12ac]\n"
> [Switching to Thread 3828.0x12ac]
> *stopped,frame={addr="0x7c810856",func="KERNEL32!CreateThread",args=[],from="C:\\WINDOWS\\system32\\kernel32.dll"},thread-id="2",stopped-threads="all"
> 104-break-insert c_simple_mingw.c:5
> 103^error,msg="Quit (expect signal SIGINT
> when the program is resumed)"
> =thread-selected,id="2"
> (gdb) 
> 104^done,bkpt={number="3",type="breakpoint",disp="keep",enabled="y",addr="0x00401310",func="main",file="../src/c_simple_mingw.c",fullname="C:/eclipse_3.6M5/runtime-New_configuration/c_simple_mingw/.settings/../src/c_simple_mingw.c",line="5",times="0",original-location="c_simple_mingw.c:5"}
> (gdb) 
> 105-exec-continue
> 105^running
> *running,thread-id="all"
> (gdb) 
> *stopped,reason="signal-received",signal-name="SIGINT",signal-meaning="Interrupt",frame={addr="0x7c874fed",func="KERNEL32!GetConsoleCharType",args=[],from="C:\\WINDOWS\\system32\\kernel32.dll"},thread-id="2",stopped-threads="all"
> (gdb) 
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