Fix 1349

Author: dsyme

src/fsharp/TastOps.fs

@@ -5671,6 +5671,7 @@ let mkFolders (folders : _ ExprFolder) =
             | Expr.Lambda(_lambdaId ,_ctorThisValOpt,_baseValOpt,_argvs,body,_m,_rty) -> exprF  z body
             | Expr.TyLambda(_lambdaId,_argtyvs,body,_m,_rty) -> exprF  z body
             | Expr.TyChoose(_,body,_) -> exprF  z body
+
             | Expr.App (f,_fty,_tys,argtys,_) -> 
                 let z = exprF z f
                 let z = exprsF z argtys
@@ -5684,17 +5685,24 @@ let mkFolders (folders : _ ExprFolder) =
                 let z = exprF z body
                 z
             | Expr.Link rX -> exprF z (!rX)
+
             | Expr.Match (_spBind,_exprm,dtree,targets,_m,_ty)                 -> 
                 let z = dtreeF z dtree
                 let z = Array.fold targetF z targets
                 z
-            | Expr.Quote(_e,{contents=Some(_typeDefs,_argTypes,argExprs,_)},_,_,_)  -> exprsF z argExprs
-            | Expr.Quote(_e,{contents=None},_,_m,_) -> z
+            | Expr.Quote(e,{contents=Some(_typeDefs,_argTypes,argExprs,_)},_,_,_)  -> 
+                let z = exprF z e
+                exprsF z argExprs
+
+            | Expr.Quote(e,{contents=None},_,_m,_) -> 
+                exprF z e
+
             | Expr.Obj (_n,_typ,_basev,basecall,overrides,iimpls,_m)    -> 
                 let z = exprF z basecall
                 let z = List.fold tmethodF z overrides
                 let z = List.fold (foldOn snd (List.fold tmethodF)) z iimpls
                 z
+
             | Expr.StaticOptimization (_tcs,csx,x,_) -> exprsF z [csx;x]
 
     and valBindF dtree z bind =

tests/fsharp/core/quotes/test.fsx

@@ -2718,6 +2718,15 @@ module ExtensionMembersWithSameName =
     runAll()
 #endif
 
+module PartialApplicationLeadToInvalidCodeWhenOptimized = 
+    let f () = 
+        let x = 1
+        let g (y:int) (z:int) = <@ x @>
+        let _ = g 3 // the closure generated by this code was invalid
+        ()
+
+    f ()
+
 module TestAssemblyAttributes = 
     let attributes = System.Reflection.Assembly.GetExecutingAssembly().GetCustomAttributes(false)