Small irgen fix

src/codegen/compvars.cpp

@@ -2607,7 +2607,7 @@ public:
     }
 
     CompilerVariable* contains(IREmitter& emitter, const OpInfo& info, VAR* var, CompilerVariable* lhs) override {
-        return undefVariable();
+        return boolFromI1(emitter, llvm::UndefValue::get(g.i1));
     }
 
     CompilerVariable* getitem(IREmitter& emitter, const OpInfo& info, ConcreteCompilerVariable* var,

src/codegen/irgen/irgenerator.cpp

@@ -874,7 +874,8 @@ private:
 
         if (type == AST_TYPE::In || type == AST_TYPE::NotIn) {
             CompilerVariable* r = right->contains(emitter, getOpInfoForNode(node, unw_info), left);
-            assert(r->getType() == BOOL);
+            ASSERT(r->getType() == BOOL, "%s gave %s", right->getType()->debugName().c_str(),
+                   r->getType()->debugName().c_str());
             if (type == AST_TYPE::NotIn) {
                 ConcreteCompilerVariable* converted = r->makeConverted(emitter, BOOL);
                 // TODO: would be faster to just do unboxBoolNegated

test/tests/type_errors.py

@@ -32,3 +32,13 @@ try:
     print 1.0[0]
 except TypeError, e:
     print e
+
+
+
+def f2():
+    if 0:
+        1 in l
+        l = []
+
+for i in xrange(100):
+    f2()