Problem with LLVM-C bindings

[Daniel]

Hi all, I'm having a problem with llvm-c bindings, it is likely a 
trivial thing, but this is my first D project, and I'm not an 
expert in C either.

- symtable.d
struct Symbol {
     string name;
     SymbolKind kind;
     SymbolType type;
     LLVMValueRef valueRef;

     public LLVMValueRef getValueRef() {
         return valueRef;
     }

     public void setValueRef(LLVMValueRef valueRef) {
         this.valueRef = valueRef;
     }
}

- ast.d
class ConstDeclNode : AstNode {
     string constName;
     int constValue;
     Symbol constSymbol;

     Symbol getConstSymbol() {
         return constSymbol;
     }

     void setConstSymbol(Symbol constSymbol) {
         this.constSymbol = constSymbol;
     }

- codegen.d
             valRef = LLVMBuildAlloca(llvmBuilder, int32Type, 
symbolName.toStringz());
             vars[symbolName] = valRef;
             node.getVarSymbol().setValueRef(valRef);
---snip---
             variableRef = vars[symbolName];                    => 
WORKS
             variableRef = node.getVarSymbol().getValueRef();   => 
DOESN'T WORK

Here, vars[] is declared in codegen.d, I set and get 
LLVMValueRefs and everything goes well, but I tried to store the 
LLVMValueRefs in the Symbol structure which is in another D 
module and cannot get it to work, the program stops there when 
trying to access those values.

Any hint about what to try will be greatly appreciated.

Daniel