Crash of the test MX program

[bortzmeyer]

The demo mx program crashes:

Programmation/Go/godns % _examples/mx/mx
_examples/mx/mx DOMAIN

Programmation/Go/godns % _examples/mx/mx nic.fr
panic: runtime error: invalid memory address or nil pointer dereference

panic PC=0xb7656e90
runtime.panic+0x9f /usr/local/go/src/pkg/runtime/proc.c:1032
runtime.panic(0x80b8bb8, 0xb7652938)
runtime.panicstring+0x61 /usr/local/go/src/pkg/runtime/runtime.c:83
runtime.panicstring(0x81a6977, 0x44)
runtime.sigpanic+0x11b /usr/local/go/src/pkg/runtime/linux/thread.c:286
runtime.sigpanic()
main.main+0x27a /home/bortzmeyer/Programmation/Go/godns/_examples/mx/mx.go:32
main.main()
runtime.mainstart+0xf /usr/local/go/src/pkg/runtime/386/asm.s:84
runtime.mainstart()
runtime.goexit /usr/local/go/src/pkg/runtime/proc.c:148
runtime.goexit()

goroutine 3 [3]:
runtime.entersyscall+0x25 /usr/local/go/src/pkg/runtime/proc.c:572
runtime.entersyscall()
syscall.Syscall6+0x5 /usr/local/go/src/pkg/syscall/asm_linux_386.s:39
syscall.Syscall6()
syscall.EpollWait+0x74 /usr/local/go/src/pkg/syscall/zsyscall_linux_386.go:188
syscall.EpollWait(0x6, 0xb76536d0, 0x1, 0x1, 0xffffffff, ...)
net._pollster·WaitFD+0x134 /usr/local/go/src/pkg/net/fd_linux.go:116
net._pollster·WaitFD(0xb76528d8, 0x0, 0x0, 0x0, 0x0, ...)
net._pollServer·Run+0xcb /usr/local/go/src/pkg/net/fd.go:207
net._pollServer·Run(0xb767dd60, 0x0)
runtime.goexit /usr/local/go/src/pkg/runtime/proc.c:148
runtime.goexit()

goroutine 2 [4]:
runtime.gosched+0x75 /usr/local/go/src/pkg/runtime/proc.c:553
runtime.gosched()
runtime.selectgo+0x2c0 /usr/local/go/src/pkg/runtime/chan.c:768
runtime.selectgo(0xb76536f0, 0xb76717c0)
dns/resolver.query+0x549 /home/bortzmeyer/Programmation/Go/godns/resolver/resolver.go:130
dns/resolver.query(0xb7671540, 0xb76717c0, 0x0)
runtime.goexit /usr/local/go/src/pkg/runtime/proc.c:148
runtime.goexit()

go at its tip:

% hg summary
parent: 7016:4380423c630f tip
Fix documentation typo.
branch: default
commit: 6 unknown (clean)
update: (current)

godns at its tip:
% git log|head
commit 4592aba
Author: Miek Gieben miek@miek.nl
Date: Mon Jan 3 11:34:54 2011 +0100

fix TODO

Debian squeeze:

% uname -a
Linux batilda 2.6.26-2-686 #1 SMP Thu Sep 16 19:35:51 UTC 2010 i686 GNU/Linux

[miekg]

Latest git version fixes the issues.

• added return value checking to the examples.
• Note: you still have to recompile to set the nameserver you want to use. It is now hardcoded to 127.0.0.1