1 files changed, 10 insertions, 0 deletions
diff --git a/lib/CodeGen/FunctionGen.cc b/lib/CodeGen/FunctionGen.cc
index dc238b5..cbaee75 100644
--- a/lib/CodeGen/FunctionGen.cc
+++ b/lib/CodeGen/FunctionGen.cc
@@ -34,6 +34,10 @@ Type *FunctionGen::getLLVMType(const std::string &TypeName) {
 void FunctionGen::createArgumentAllocas(Function *F, const std::vector<ParamDecl> &Params) {
     Function::arg_iterator AI = F->arg_begin();
     for (const ParamDecl &P : Params) {
+        if (Types.lookupEnumConstant(P.Name)) {
+            fprintf(stderr, "Error: parameter '%s' collides with an enum value\n", P.Name.c_str());
+            HadError = true;
+        }
         Value *ArgVal = &(*AI);
         ++AI;
         ArgVal->setName(P.Name);
@@ -70,6 +74,12 @@ Function *FunctionGen::emitPrototype(PrototypeAST *Proto) {
         HadError = true;
         return nullptr;
     }
+    if (Types.lookupEnumConstant(Proto->getName())) {
+        fprintf(stderr, "Error: '%s' is an enum value and cannot be a FUNCTION/PROCEDURE name\n",
+                Proto->getName().c_str());
+        HadError = true;
+        return nullptr;
+    }
 
     FuncSig Sig;
     Sig.ReturnTypeName = Proto->getReturnType();