diff --git a/compiler/agjasmin.pas b/compiler/agjasmin.pas
index c33747f422..10fee0677a 100644
--- a/compiler/agjasmin.pas
+++ b/compiler/agjasmin.pas
@@ -526,6 +526,8 @@ implementation
         i: longint;
         toplevelowner: tsymtable;
       begin
+        superclass:=nil;
+
         { JVM 1.5+ }
         AsmWriteLn('.bytecode 49.0');
         // include files are not support by Java, and the directory of the main
@@ -763,6 +765,8 @@ implementation
               2:result:=tostr(smallint(csym.value.valueord.svalue));
               4:result:=tostr(longint(csym.value.valueord.svalue));
               8:result:=tostr(csym.value.valueord.svalue);
+              else
+                internalerror(2014082050);
             end;
           conststring:
             result:=constastr(pchar(csym.value.valueptr),csym.value.len);
diff --git a/compiler/jvm/njvmflw.pas b/compiler/jvm/njvmflw.pas
index 966a57a23d..25f9d11fb0 100644
--- a/compiler/jvm/njvmflw.pas
+++ b/compiler/jvm/njvmflw.pas
@@ -340,6 +340,12 @@ implementation
          reasonbuf,
          exceptreg: tregister;
       begin
+         oldBreakLabel:=nil;
+         oldContinueLabel:=nil;
+         finallycodecopy:=nil;
+         continuefinallylabel:=nil;
+         breakfinallylabel:=nil;
+
          { not necessary on a garbage-collected platform }
          if implicitframe then
            internalerror(2011031803);
diff --git a/compiler/jvm/njvminl.pas b/compiler/jvm/njvminl.pas
index e4176fc838..3141b48016 100644
--- a/compiler/jvm/njvminl.pas
+++ b/compiler/jvm/njvminl.pas
@@ -87,13 +87,13 @@ implementation
 
     function tjvminlinenode.typecheck_length(var handled: boolean): tnode;
       begin
+        result:=nil;
         typecheckpass(left);
         if is_open_array(left.resultdef) or
            is_dynamic_array(left.resultdef) or
            is_array_of_const(left.resultdef) then
           begin
             resultdef:=s32inttype;
-            result:=nil;
             handled:=true;
           end;
       end;
@@ -101,6 +101,7 @@ implementation
 
     function tjvminlinenode.typecheck_high(var handled: boolean): tnode;
       begin
+        result:=nil;
         typecheckpass(left);
         if is_dynamic_array(left.resultdef) or
            is_open_array(left.resultdef) or
@@ -120,6 +121,7 @@ implementation
         para: tcallparanode;
         elemdef: tdef;
       begin
+        result:=nil;
         { normally never exists; used by the JVM backend to create new
           arrays because it requires special opcodes }
         tcallparanode(left).get_paratype;
@@ -150,7 +152,6 @@ implementation
                 para:=tcallparanode(para.right);
                 elemdef:=tarraydef(elemdef).elementdef;
               end;
-            result:=nil;
             resultdef:=left.resultdef;
             handled:=true;
           end;
@@ -289,6 +290,7 @@ implementation
       var
         handled: boolean;
       begin
+         result:=nil;
          handled:=false;
          case inlinenumber of
            in_length_x:
diff --git a/compiler/jvm/njvmmem.pas b/compiler/jvm/njvmmem.pas
index a93902a3f5..a65a070077 100644
--- a/compiler/jvm/njvmmem.pas
+++ b/compiler/jvm/njvmmem.pas
@@ -361,6 +361,8 @@ implementation
         newsize: tcgsize;
         isjump: boolean;
       begin
+        otl:=nil;
+        ofl:=nil;
         if left.resultdef.typ=stringdef then
           internalerror(2011052702);
 
diff --git a/compiler/jvm/njvmutil.pas b/compiler/jvm/njvmutil.pas
index 72df2627b2..ad61b5099c 100644
--- a/compiler/jvm/njvmutil.pas
+++ b/compiler/jvm/njvmutil.pas
@@ -75,6 +75,9 @@ implementation
       paras: tcallparanode;
       proc: string;
     begin
+      result:=nil;
+      proc:='';
+      temp:=nil;
       if not assigned(p.resultdef) then
         typecheckpass(p);
       if ((p.resultdef.typ=stringdef) and
diff --git a/compiler/jvm/tgcpu.pas b/compiler/jvm/tgcpu.pas
index e768e1883f..12f163226b 100644
--- a/compiler/jvm/tgcpu.pas
+++ b/compiler/jvm/tgcpu.pas
@@ -145,8 +145,8 @@ unit tgcpu;
                       if tprocsym(sym).procdeflist.Count<>1 then
                         internalerror(2011062801);
                       pd:=tprocdef(tprocsym(sym).procdeflist[0]);
+                      hlcg.a_call_name(list,pd,pd.mangledname,nil,false);
                     end;
-                  hlcg.a_call_name(list,pd,pd.mangledname,nil,false);
                   { static calls method replaces parameter with set instance
                     -> no change in stack height }
                 end
@@ -202,8 +202,8 @@ unit tgcpu;
                       if tprocsym(sym).procdeflist.Count<>1 then
                         internalerror(2011052404);
                       pd:=tprocdef(tprocsym(sym).procdeflist[0]);
+                      hlcg.a_call_name(list,pd,pd.mangledname,nil,false);
                     end;
-                  hlcg.a_call_name(list,pd,pd.mangledname,nil,false);
                   { static calls method replaces parameter with string instance
                     -> no change in stack height }
                   { store reference to instance }