diff --git a/modules/compiler_vm/compiler_watchdog.pl b/modules/compiler_vm/compiler_watchdog.pl
index 40196ced..ed650440 100755
--- a/modules/compiler_vm/compiler_watchdog.pl
+++ b/modules/compiler_vm/compiler_watchdog.pl
@@ -79,6 +79,7 @@ sub execute {
     next if not length $line;
     <$out> and next if $line =~ m/^\(gdb\) No line \d+ in/;
     next if $line =~ m/^\(gdb\) No symbol table/;
+    next if $line =~ m/^\[Detaching from/;
     next if $line =~ m/^\[New Thread/;
     next if $line =~ m/^\(gdb\) Continuing/;
     next if $line =~ m/^\(gdb\) \$\d+ = "~Ok\.~"/;
diff --git a/modules/compiler_vm/languages/server/_c_base.pm b/modules/compiler_vm/languages/server/_c_base.pm
index 82e5083a..4a6da1f1 100755
--- a/modules/compiler_vm/languages/server/_c_base.pm
+++ b/modules/compiler_vm/languages/server/_c_base.pm
@@ -46,7 +46,7 @@ sub postprocess {
   if (not length $result) {
     $self->{no_output} = 1;
   } elsif ($self->{code} =~ m/print_last_statement\(.*\);$/m
-    && ($result =~ m/A syntax error in expression/ || $result =~ m/No symbol.*in current context/ || $result =~ m/Can't take address of.*which isn't an lvalue/)) {
+    && ($result =~ m/A syntax error in expression/ || $result =~ m/No symbol.*in current context/ || $result =~ m/has unknown return type; cast the call to its declared/ || $result =~ m/Can't take address of.*which isn't an lvalue/)) {
     # strip print_last_statement and rebuild/re-run
     $self->{code} =~ s/print_last_statement\((.*)\);/$1;/mg;
     $self->preprocess;
diff --git a/modules/compiler_vm/misc/compiler.xml b/modules/compiler_vm/misc/compiler.xml
new file mode 100644
index 00000000..edf9720a
--- /dev/null
+++ b/modules/compiler_vm/misc/compiler.xml
@@ -0,0 +1,145 @@
+<domain type='kvm'>
+  <name>compiler</name>
+  <uuid>a0955f41-1fb8-48b5-93ea-76319ad07c2f</uuid>
+  <memory unit='KiB'>1048576</memory>
+  <currentMemory unit='KiB'>1048576</currentMemory>
+  <vcpu placement='static'>4</vcpu>
+  <iothreads>1</iothreads>
+  <resource>
+    <partition>/machine</partition>
+  </resource>
+  <os>
+    <type arch='x86_64' machine='pc-i440fx-cosmic'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+    <hyperv>
+      <relaxed state='on'/>
+      <vapic state='on'/>
+      <spinlocks state='on' retries='8191'/>
+    </hyperv>
+    <kvm>
+      <hidden state='on'/>
+    </kvm>
+    <vmport state='off'/>
+  </features>
+  <cpu mode='host-passthrough' check='full'>
+    <topology sockets='1' cores='2' threads='2'/>
+    <cache mode='passthrough'/>
+  </cpu>
+  <clock offset='utc'>
+    <timer name='rtc' tickpolicy='catchup'/>
+    <timer name='pit' tickpolicy='delay'/>
+    <timer name='hpet' present='no'/>
+  </clock>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <pm>
+    <suspend-to-mem enabled='no'/>
+    <suspend-to-disk enabled='no'/>
+  </pm>
+  <devices>
+    <emulator>/usr/bin/kvm-spice</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/var/lib/libvirt/images/compiler.qcow2'/>
+      <backingStore/>
+      <target dev='vda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
+    </disk>
+    <disk type='file' device='cdrom'>
+      <driver name='qemu' type='raw'/>
+      <target dev='hda' bus='ide'/>
+      <readonly/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <controller type='usb' index='0' model='ich9-ehci1'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x7'/>
+    </controller>
+    <controller type='usb' index='0' model='ich9-uhci1'>
+      <master startport='0'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0' multifunction='on'/>
+    </controller>
+    <controller type='usb' index='0' model='ich9-uhci2'>
+      <master startport='2'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x1'/>
+    </controller>
+    <controller type='usb' index='0' model='ich9-uhci3'>
+      <master startport='4'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x2'/>
+    </controller>
+    <controller type='ide' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+    </controller>
+    <controller type='virtio-serial' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'/>
+    <interface type='network'>
+      <mac address='52:54:00:f3:c6:38'/>
+      <source network='default'/>
+      <model type='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </interface>
+    <serial type='tcp'>
+      <source mode='bind' host='127.0.0.1' service='3333'/>
+      <protocol type='telnet'/>
+      <target type='isa-serial' port='0'>
+        <model name='isa-serial'/>
+      </target>
+    </serial>
+    <serial type='tcp'>
+      <source mode='bind' host='127.0.0.1' service='3336'/>
+      <protocol type='telnet'/>
+      <target type='isa-serial' port='1'>
+        <model name='isa-serial'/>
+      </target>
+    </serial>
+    <console type='tcp'>
+      <source mode='bind' host='127.0.0.1' service='3333'/>
+      <protocol type='telnet'/>
+      <target type='serial' port='0'/>
+    </console>
+    <channel type='unix'>
+      <target type='virtio' name='org.qemu.guest_agent.0'/>
+      <address type='virtio-serial' controller='0' bus='0' port='1'/>
+    </channel>
+    <channel type='spicevmc'>
+      <target type='virtio' name='com.redhat.spice.0'/>
+      <address type='virtio-serial' controller='0' bus='0' port='2'/>
+    </channel>
+    <input type='tablet' bus='usb'>
+      <address type='usb' bus='0' port='1'/>
+    </input>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <graphics type='spice' autoport='yes'>
+      <listen type='address'/>
+      <image compression='off'/>
+    </graphics>
+    <sound model='ich6'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </sound>
+    <video>
+      <model type='cirrus' vram='16384' heads='1' primary='yes'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </video>
+    <redirdev bus='usb' type='spicevmc'>
+      <address type='usb' bus='0' port='2'/>
+    </redirdev>
+    <redirdev bus='usb' type='spicevmc'>
+      <address type='usb' bus='0' port='3'/>
+    </redirdev>
+    <memballoon model='virtio'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
+    </memballoon>
+    <rng model='virtio'>
+      <backend model='random'>/dev/urandom</backend>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
+    </rng>
+  </devices>
+  <seclabel type='dynamic' model='apparmor' relabel='yes'/>
+</domain>