this problem has made me puzzled for a long time. I am scripting a simple scaner, but it got some unknown mistakes

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my @report;
Scan::ScanAll(\@addr, \@port, \@report);  #bugs here "bug1";
printf "Report ref is : @report \n";     #"tag1" to see if script can 
+run here
                           
                     
Report::TxtReport(@report);
system("gedit report.txt");

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Scan::ScanAll is a function that scan the address and ports in @addr and @port and return a unformated report to @report; When I send only one address to @addr and scanned, script can run to "tag1" place. But when I send more than an address to @addr , the script can not run to "tag1" and things after it, it seems to jump that section. There are other "printf" in Scan::ScanAll that shows me the Scan::ScanAll function runs well all the time. It seems that the bug flies out before "tag1" and after "bug1". Could anyone tell me why?

this is the output when run only one address
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192.168.1.3
Create one thread for 192.168.1.3
192.168.1.3 135/tcp 139/tcp 445/tcp
Finish ScanAll sub, Get Out of Scan.pm
ARRAY(0x867f1cc)
Report ref is : ARRAY(0x867f1cc)    ###here get out of ###Scan::ScanAl
+l, and I printed the @report, code can go on
Get in Html Report.pm
192.168.1.3
135/tcp
msrpc 135 tcp  Microsoft RPC services
139/tcp
445/tcp
A Session finished Scaning! excting ###debug msg show finish
### here I called firefox to read the report in html, in 
### common, finish all the scan should print as upon
GLib-GObject-WARNING **: instance with invalid (NULL) class pointer.
GLib-GObject-CRITICAL **: file gsignal.c: line 2122 (g_signal_emit_val
+ist): assertion `G_TYPE_CHECK_INSTANCE (instance)' failed.
GLib-GObject-WARNING **: instance with invalid (NULL) class pointer.
GLib-GObject-CRITICAL **: file gsignal.c: line 1765 (g_signal_handlers
+_destroy): assertion `G_TYPE_CHECK_INSTANCE (instance)' failed.


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this is the output when run >1 addresses
######################################################
10.0.144.90 192.168.1.2 192.168.1.3
Create one thread for 10.0.144.90
Create one thread for 192.168.1.2
Create one thread for 192.168.1.3
10.0.144.90
192.168.1.2
192.168.1.3 135/tcp 139/tcp 445/tcp
Finish ScanAll sub, Get Out of Scan.pm
ARRAY(0x8661c8c) ARRAY(0x8661d88) ARRAY(0x8661dac) 
###here get out of Scan::ScanAll, the refs are printed in ###Scan::Sca
+nALL as a debugs msg, it shows me, in ###Scan::ScanALL, @result is ok
+ yet, it can not run on when ###return from Scan::ScanAll.
Lib-GObject-WARNING **: instance of invalid non-instantiatable type `g
+pointer' during global destruction.
Lib-GObject-CRITICAL **: file gsignal.c: line 2122 (g_signal_emit_vali
+st): assertion `G_TYPE_CHECK_INSTANCE (instance)' failed during globa
+l destruction.
Lib-GObject-WARNING **: instance of invalid non-instantiatable type `g
+pointer' during global destruction.
Lib-GObject-CRITICAL **: file gsignal.c: line 1765 (g_signal_handlers_
+destroy): assertion `G_TYPE_CHECK_INSTANCE (instance)' failed during 
+global destruction.
Lib-GObject-WARNING **: instance of invalid non-instantiatable type `<
+invalid>' during global destruction.
Lib-GObject-CRITICAL **: file gsignal.c: line 2122 (g_signal_emit_vali
+st): assertion `G_TYPE_CHECK_INSTANCE (instance)' failed during globa
+l destruction.
Lib-GObject-WARNING **: instance of invalid non-instantiatable type `<
+invalid>' during global destruction.
Lib-GObject-CRITICAL **: file gsignal.c: line 1765 (g_signal_handlers_
+destroy): assertion `G_TYPE_CHECK_INSTANCE (instance)' failed during 
+global destruction.
Lib-GObject-WARNING **: instance of invalid non-instantiatable type `<
+unknown>' during global destruction.
Lib-GObject-CRITICAL **: file gsignal.c: line 2122 (g_signal_emit_vali
+st): assertion `G_TYPE_CHECK_INSTANCE (instance)' failed during globa
+l destruction.
Lib-GObject-WARNING **: instance of invalid non-instantiatable type `<
+unknown>' during global destruction.
Lib-GObject-CRITICAL **: file gsignal.c: line 1765 (g_signal_handlers_
+destroy): assertion `G_TYPE_CHECK_INSTANCE (instance)' failed during 
+global destruction.
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I've got a poor english so I dont know if I made it clear. thx all the same