Re: GDB: "warning: Can't wait for pid ???: No child processes" (was: GNU accepted as a mentoring organization in GSOC 2014)

2014-04-11 Thread Zhang Cong
Hi, On Wed, Apr 9, 2014 at 8:57 PM, Yue Lu wrote: > > > > The reason is that the native _GDB_ doesn't work either on Hurd. So as > gdbserver. You can try to attach to a exist process by GDB, you will get > that warnning. In detail, there is no distinct difference between the > implementation of G

Re: GDB: "warning: Can't wait for pid ???: No child processes" (was: GNU accepted as a mentoring organization in GSOC 2014)

2014-04-09 Thread Yue Lu
Hi! On Tue, Apr 8, 2014 at 11:26 PM, Zhang Cong wrote: > Why, I can't understand ? the gdb server be the debugged program's > parent, right? > And gdb just interactive with gdb server and gdbserver interactive with > the debugged program, right? > > Yes, if you use the gdbserver to start the de

Re: GDB: "warning: Can't wait for pid ???: No child processes" (was: GNU accepted as a mentoring organization in GSOC 2014)

2014-04-08 Thread Zhang Cong
On Tue, Apr 8, 2014 at 11:00 PM, Hacklu wrote: I am sorry to say that, when use gdb server you also need to re-parent > process. Because when I implement gdb server on Hurd, I found there is a > limit on Hurd when you attach to a process you can't resume the process > from stop states(or says, th

Re: GDB: "warning: Can't wait for pid ???: No child processes" (was: GNU accepted as a mentoring organization in GSOC 2014)

2014-04-08 Thread Hacklu
Hi! Zhang Cong wrote: > Hi Thomas, > >I want to make uim-fep ( https://code.google.com/p/uim/wiki/UimFep ) work > with hurd, it a front end processer, it's not work and I try to debug it. > >Because the program itself need hook the input and output, so I can't use > gdb to direc

Re: GDB: "warning: Can't wait for pid ???: No child processes" (was: GNU accepted as a mentoring organization in GSOC 2014)

2014-04-08 Thread Zhang Cong
Hi Thomas, I want to make uim-fep ( https://code.google.com/p/uim/wiki/UimFep ) work with hurd, it a front end processer, it's not work and I try to debug it. Because the program itself need hook the input and output, so I can't use gdb to direct debug it, I don't want to make the input

GDB: "warning: Can't wait for pid ???: No child processes" (was: GNU accepted as a mentoring organization in GSOC 2014)

2014-04-07 Thread Thomas Schwinge
Hi! On Tue, 8 Apr 2014 00:20:57 +0800, Zhang Cong wrote: > I am very interesting in that will the gdb server be a workaround for hurd > gdb's > "warning: Can't wait for pid ???: No child processes" problem? > > Can anyone has workable gdb server to do a test? Can't continue really > make me cr