Prepare 6.0.2 (#326)

* Prepare 6.0.2

* Minor note

CHANGELOG.md

@@ -9,6 +9,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 ### Removed
 
+## [6.0.2] 2021-07-05
+### Changed
+- `List.from_to_step` now forbids non-positive step (this change does
+  *not* alter the behavior of the previously deployed contracts)
+- Fixed leaking state between contracts
+
 ## [6.0.1] 2021-06-24
 ### Changed
 - Fixed a bug in calldata encoding for contracts containing multiple contracts
@@ -303,7 +309,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Simplify calldata creation - instead of passing a compiled contract, simply
   pass a (stubbed) contract string.
 
-[Unreleased]: https://github.com/aeternity/aesophia/compare/v6.0.1...HEAD
+[Unreleased]: https://github.com/aeternity/aesophia/compare/v6.0.2...HEAD
+[6.0.2]: https://github.com/aeternity/aesophia/compare/v6.0.1...v6.0.2
 [6.0.1]: https://github.com/aeternity/aesophia/compare/v6.0.0...v6.0.1
 [6.0.0]: https://github.com/aeternity/aesophia/compare/v5.0.0...v6.0.0
 [5.0.0]: https://github.com/aeternity/aesophia/compare/v4.3.0...v5.0.0

docs/sophia_stdlib.md

@@ -1216,7 +1216,7 @@ List.unzip(l : list('a * 'b)) : list('a) * list('b)
 Opposite to the `zip` operation. Takes a list of pairs and returns pair of lists with respective elements on same indices.
 
 
-### merge
+#### merge
 ```
 List.merge(lesser_cmp : ('a, 'a) => bool, l1 : list('a), l2 : list('a)) : list('a)
 ```
@@ -1224,7 +1224,7 @@ List.merge(lesser_cmp : ('a, 'a) => bool, l1 : list('a), l2 : list('a)) : list('
 Merges two sorted lists into a single sorted list. O(length(l1) + length(l2))
 
 
-### sort
+#### sort
 ```
 List.sort(lesser_cmp : ('a, 'a) => bool, l : list('a)) : list('a)
 ```

priv/stdlib/List.aes

@@ -80,6 +80,7 @@ namespace List =
  * `b` only if `(b - a) mod step == 0`. `step` should be bigger than 0.
  */
   function from_to_step(a : int, b : int, s : int) : list(int) =
+    require(s > 0, "List.from_to_step: non-positive step")
     from_to_step_(a, b - (b-a) mod s, s, [])
   private function from_to_step_(a : int, b : int, s : int, acc : list(int)) : list(int) =
     if(b < a) acc

rebar.config

@@ -15,7 +15,7 @@
             {base_plt_apps, [erts, kernel, stdlib, crypto, mnesia]}
            ]}.
 
-{relx, [{release, {aesophia, "6.0.1"},
+{relx, [{release, {aesophia, "6.0.2"},
          [aesophia, aebytecode, getopt]},
 
         {dev_mode, true},

src/aeso_ast_to_fcode.erl

@@ -330,10 +330,11 @@ to_fcode(Env, [{Contract, Attrs, Con = {con, _, Name}, Decls}|Rest])
     case Contract =:= contract_interface of
         false ->
             #{ builtins := Builtins } = Env,
-            ConEnv = Env#{ context  => {contract_def, Name},
+            ConEnv = maps:remove(state_layout,
+                     Env#{ context  => {contract_def, Name},
                            builtins => Builtins#{[Name, "state"]          => {get_state, none},
                                                  [Name, "put"]            => {set_state, 1},
-                                                 [Name, "Chain", "event"] => {chain_event, 1}} },
+                                                 [Name, "Chain", "event"] => {chain_event, 1}} }),
             #{ functions := PrevFuns } = ConEnv,
             #{ functions := Funs } = Env1 =
                 decls_to_fcode(ConEnv, Decls),

src/aesophia.app.src

@@ -1,6 +1,6 @@
 {application, aesophia,
  [{description, "Compiler for Aeternity Sophia language"},
-  {vsn, "6.0.1"},
+  {vsn, "6.0.2"},
   {registered, []},
   {applications,
    [kernel,

test/aeso_compiler_tests.erl

@@ -199,6 +199,7 @@ compilable_contracts() ->
      "clone",
      "clone_simple",
      "create",
+     "child_contract_init_bug",
      "test" % Custom general-purpose test file. Keep it last on the list.
     ].
 

test/contracts/child_contract_init_bug.aes

@@ -0,0 +1,8 @@
+contract Identity =
+  record state = {foo: int, bar: string}
+  entrypoint init() = {foo = 0, bar = ""}
+
+main contract IdentityService =
+  stateful entrypoint createNewIdentity() : Identity =
+    put(())
+    Chain.create()