Fix wrong globals being added

src/compiler.pr

@@ -3210,7 +3210,10 @@ def walk_Identifier(node: &parser::Node, state: &State) -> Value {
     if (@val).global {
         let name = val.assembly_name(state)
         (@(@state).module).imported.add(name)
-        if val.module != state.module {
+        if val.module != state.module and 
+            not is_function(val.tpe) and
+            not state.module.result.globals.contains(name) {
+
             state.module.result.globals(name) = [
                 tpe = val.tpe,
                 name = name,

src/consteval.pr

@@ -306,9 +306,9 @@ export def walk_Def(node: &parser::Node, state: &typechecking::State) {
     let impl = node.value.def_.impl
     let has_yield = node.value.def_.has_yield
 
-    let prev_context = state.context
-    state.context = state.module.scope
-    defer state.context = prev_context
+    //let prev_context = state.context
+    //state.context = state.module.scope
+    //defer state.context = prev_context
 
     var body = node.value.def_.body
     let imported = (share !int & parser::ShareMarker::IMPORT !int) != 0

src/parser.pr

@@ -433,7 +433,7 @@ export let invalid_loc: SourceLoc = [
 ] !SourceLoc
 
 export def is_invalid(loc: SourceLoc) -> bool {
-    return loc.filename == null
+    return not to_bool(loc.filename)
 }
 
 export def == (this: SourceLoc, other: SourceLoc) -> bool {