Problems on setuid solaris file

[Inode]

Hi all,
I got some problems to debug setuid file on solaris system. Currently I 
got the same problem on solaris 8 and 9.
The test are did with GDB 6.0 (the same with prior) and gcc 3.3.2 and 
gcc 3.2.

(gdb) r
Starting program: /export/home/inode/test
procfs: target_wait (wait_for_stop) line 3931, /proc/11035: Resource 
temporarily unavailable.
(gdb)

Anyone have idea?

Thanks in advance

Inode_


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root@merlino[/export/home/inode]: id
uid=0(root) gid=1(other)
root@merlino[/export/home/inode]:
root@merlino[/export/home/inode]: cat test.c

void main(){

printf("test\n");

}
root@merlino[/export/home/inode]: gcc -o test test.c
test.c: In function `main':
test.c:2: warning: return type of `main' is not `int'
root@merlino[/export/home/inode]: chmod +s test
root@merlino[/export/home/inode]:
root@merlino[/export/home/inode]: gdb test
GNU gdb 6.0
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain 
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "sparc-sun-solaris2.8"...(no debugging 
symbols found)...
(gdb) r
Starting program: /export/home/inode/test
procfs: target_wait (wait_for_stop) line 3931, /proc/11035: Resource 
temporarily unavailable.
(gdb) quit

root@merlino[/export/home/inode]: truss gdb test
[..]
open("/proc/11038/status", O_RDONLY)            = 6
[...]
getsid(0)                                       = 242
ioctl(0, TIOCSPGRP, 0xFFBEEA90)                 = 0
write(5, "\0\0\005\0\0\003", 8)                 = 8
lseek(6, 0, SEEK_SET)                           = 0
read(6, 0x002DB510, 1232)                       Err#11 EAGAIN
write(5, "\0\0\003", 4)                         Err#11 EAGAIN
sigaction(SIGTTOU, 0xFFBEE400, 0xFFBEE480)      = 0
ioctl(0, TCGETS, 0x002B2F58)                    = 0
ioctl(0, TIOCGSID, 0xFFBEE454)                  = 0
getsid(0)                                       = 242
ioctl(0, TIOCGPGRP, 0xFFBEE4BC)                 = 0
ioctl(0, TCSETS, 0xFFBEE418)                    = 0
ioctl(0, TIOCGSID, 0xFFBEE45C)                  = 0
getsid(0)                                       = 242
ioctl(0, TIOCSPGRP, 0xFFBEE508)                 = 0
sigaction(SIGTTOU, 0xFFBEE400, 0xFFBEE480)      = 0
fcntl(0, F_GETFL, 0x00000000)                   = 2
fstat64(0, 0xFFBEE3B8)                          = 0
fstat64(0, 0xFFBEE3B8)                          = 0
fcntl(0, F_SETFL, 0x00002002)                   = 0
fstat64(0, 0xFFBEE428)                          = 0
fcntl(0, F_SETFL, 0x00002002)                   = 0
write(2, 0x002D8500, 0)                         = 0
procfs: target_wait (wait_for_stop) line 3931, /proc/11038: Resource 
temporarily unavailable.write(2, " p r o c f s :   t a r g".., 93) = 93
[...]