bash, dircolors, setsid and a stackdump

[David Rothenberger]

I've just encountered a very strange problem involving setsid, rxvt,
bash and dircolors.  I'm using CVS from Thu Jan 22 07:18:16 PST
2004.

I have a simple script script.sh:

---begin script---
#!/bin/sh
echo foo
sleep 10
---end script---

I have uncommented the dircolors line in the default /etc/profile
and am using the default /etc/DIR_COLORS.

I start an rxvt window with "rxvt -e bash --login -i".  From that
window, I execute "setsid bash script.sh" and get a stackdump from
sleep.exe.

---begin stackdump---
Exception: STATUS_ACCESS_VIOLATION at eip=6100256C
eax=616727A4 ebx=00000000 ecx=61670000 edx=435F534C esi=00000EC8 edi=00BE0000
ebp=0022DA88 esp=0022DA70 program=C:\cygwin\bin\sleep.exe
cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
Stack trace:
Frame     Function  Args
0022DA88  6100256C  (61670000, 00000002, 0022DAA8, 00000000)    /netrel/src/cygwin-20040122/winsup/cygwin/cygheap.cc:180
0022DAA8  610915CF  (0A03001C, 0022EC9C, 0022E370, 0022E370)    /netrel/src/cygwin-20040122/winsup/cygwin/syscalls.cc:104
0022EDB8  6108EFDE  (0A04CFF0, 0A04C5C8, 0A04D138, 00000003)    /netrel/src/cygwin-20040122/winsup/cygwin/spawn.cc:794
0022EDE8  6108FC36  (00000003, 0A04CFF0, 0A04C5C8, 0A04D138)    /netrel/src/cygwin-20040122/winsup/cygwin/spawn.cc:975
0022EE08  6102729B  (0A04CFF0, 0A04C5C8, 0A04D138, 61088DE7)    /netrel/src/cygwin-20040122/winsup/cygwin/exec.cc:36
0022EEF8  610868F1  (0A04CFF0, 0A04C5C8, 0A04D138, 00000000)    ??:0
0022EF48  00414735  (0A04CE48, 00000000, 0A045398, FFFFFFFF)    ??:0
0022EFB8  004135B3  (0A04CD80, FFFFFFFF, FFFFFFFF, 00000000)    ??:0
0022EFF8  004107BF  (0A045380, 00000000, FFFFFFFF, FFFFFFFF)    ??:0
0022F028  004101E4  (0A045380, 00000000, 004888F4, 0A041310)    ??:0
0022F058  004039F9  (61672C1C, 00000002, 00000002, 00000001)    ??:0
0022F0B0  00401783  (00000002, 61672C1C, 0A0411A8, 0022F108)    ??:0
0022F0F0  61005EB5  (0022F108, 77D447A6, 00000000, 77D42EC8)    /netrel/src/cygwin-20040122/winsup/cygwin/dcrt0.cc:901
0022FF90  61005FA0  (00000000, 00000000, 00000000, 00000000)    /netrel/src/cygwin-20040122/winsup/cygwin/dcrt0.cc:945
End of stack trace
---end stackdump---

I do not encounter the problem if I
* run the command from a cmd.exe window either from within a "bash
  --login -i" shell or directly from cmd.exe;
* comment out the dircolors line in /etc/profile; or
* invoke "setsid sh script.sh"

If I run "setsid bash script.sh" from an ash shell (running in a
cmd.exe window or rxvt) I don't get a stackdump, but the shell won't
accept another command until the script terminates.

Dave

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