diff options
author | leino <unknown> | 2014-12-02 19:41:39 -0800 |
---|---|---|
committer | leino <unknown> | 2014-12-02 19:41:39 -0800 |
commit | 3d8fd4cc56db82eb5c83f1e2061e88859f40778d (patch) | |
tree | dca65a6090582985c9c0cec2fdbc0aae5164dd9f /Test/dafny0/RefinementModificationChecking.dfy | |
parent | 5bb3834b184f7f2a2f9d3d5b1d8acf2de6b3b8fc (diff) |
Fixed some issues with assignments in refinements, both soundness bugs in previous version and changes necessitated by recent parsing refactoring
Diffstat (limited to 'Test/dafny0/RefinementModificationChecking.dfy')
-rw-r--r-- | Test/dafny0/RefinementModificationChecking.dfy | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/Test/dafny0/RefinementModificationChecking.dfy b/Test/dafny0/RefinementModificationChecking.dfy index 34e30a05..70d0b989 100644 --- a/Test/dafny0/RefinementModificationChecking.dfy +++ b/Test/dafny0/RefinementModificationChecking.dfy @@ -10,7 +10,7 @@ abstract module R1 { }
}
-abstract module R2 refines R1 {
+module R2 refines R1 {
var g: nat;
method m ...
{
@@ -18,8 +18,36 @@ abstract module R2 refines R1 { var x := 3;
t := {1}; // error: previous local
r := 3; // error: out parameter
- f := 4; // fine: all fields, will cause re-verification
+ f := 4; // error: previously defined field
x := 6; // fine: new local
g := 34;// fine: new field
}
}
+
+abstract module M0 {
+ class C {
+ method Init()
+ modifies this;
+ { }
+ method InitWithSideEffects(c: C)
+ modifies c;
+ { }
+ method mmm(arr: array<int>) {
+ var a: C :| true;
+ var b: C :| true;
+ }
+ }
+}
+
+module M1 refines M0 {
+ class C {
+ method mmm... {
+ var a := new C; // fine
+ var b := new C.Init(); // fine
+ var c := new C.InitWithSideEffects(b); // error: modifies previous state
+ if arr != null && 12 < arr.Length {
+ arr[12] := 26; // error: modifies previously defined state
+ }
+ }
+ }
+}
|