From a3c1968acdcca1150e156d4a0f1021e51ee6232e Mon Sep 17 00:00:00 2001
From: Geod24 <pro.mathias.lang@gmail.com>
Date: Tue, 28 Jul 2020 09:46:30 +0900
Subject: [PATCH] [TEST ONLY] Enable `preview=in` by default

---
 compiler/src/dmd/globals.d                       | 2 +-
 compiler/test/fail_compilation/deprecatedinref.d | 4 ++--
 compiler/test/fail_compilation/fail183.d         | 8 ++++----
 compiler/test/run.d                              | 2 +-
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/compiler/src/dmd/globals.d b/compiler/src/dmd/globals.d
index 1919d9ae0ce1..a828b9c79e59 100644
--- a/compiler/src/dmd/globals.d
+++ b/compiler/src/dmd/globals.d
@@ -157,7 +157,7 @@ extern (C++) struct Param
                                  // https://digitalmars.com/d/archives/digitalmars/D/Binding_rvalues_to_ref_parameters_redux_325087.html
                                  // Implementation: https://github.com/dlang/dmd/pull/9817
     FeatureState noSharedAccess; // read/write access to shared memory objects
-    bool previewIn;              // `in` means `[ref] scope const`, accepts rvalues
+    bool previewIn = true;       // `in` means `[ref] scope const`, accepts rvalues
     bool inclusiveInContracts;   // 'in' contracts of overridden methods must be a superset of parent contract
     bool shortenedMethods = true;       // allow => in normal function declarations
     bool fixImmutableConv;       // error on unsound immutable conversion - https://github.com/dlang/dmd/pull/14070
diff --git a/compiler/test/fail_compilation/deprecatedinref.d b/compiler/test/fail_compilation/deprecatedinref.d
index 20c3666bef1e..b3a374a5e66c 100644
--- a/compiler/test/fail_compilation/deprecatedinref.d
+++ b/compiler/test/fail_compilation/deprecatedinref.d
@@ -2,8 +2,8 @@
 REQUIRED_ARGS: -de
 TEST_OUTPUT:
 ---
-fail_compilation/deprecatedinref.d(9): Deprecation: using `in ref` is deprecated, use `-preview=in` and `in` instead
-fail_compilation/deprecatedinref.d(10): Deprecation: using `ref in` is deprecated, use `-preview=in` and `in` instead
+fail_compilation/deprecatedinref.d(9): Error: attribute `ref` is redundant with previously-applied `in`
+fail_compilation/deprecatedinref.d(10): Error: attribute `in` cannot be added after `ref`: remove `ref`
 ---
 */
 void foo(in ref int);
diff --git a/compiler/test/fail_compilation/fail183.d b/compiler/test/fail_compilation/fail183.d
index 362213c1f640..b086893bf416 100644
--- a/compiler/test/fail_compilation/fail183.d
+++ b/compiler/test/fail_compilation/fail183.d
@@ -2,13 +2,13 @@
 TEST_OUTPUT:
 ---
 fail_compilation/fail183.d(17): Error: attribute `const` is redundant with previously-applied `in`
-fail_compilation/fail183.d(18): Error: attribute `scope` cannot be applied with `in`, use `-preview=in` instead
+fail_compilation/fail183.d(18): Error: attribute `scope` is redundant with previously-applied `in`
 fail_compilation/fail183.d(19): Error: attribute `const` is redundant with previously-applied `in`
-fail_compilation/fail183.d(19): Error: attribute `scope` cannot be applied with `in`, use `-preview=in` instead
-fail_compilation/fail183.d(20): Error: attribute `scope` cannot be applied with `in`, use `-preview=in` instead
+fail_compilation/fail183.d(19): Error: attribute `scope` is redundant with previously-applied `in`
+fail_compilation/fail183.d(20): Error: attribute `scope` is redundant with previously-applied `in`
 fail_compilation/fail183.d(20): Error: attribute `const` is redundant with previously-applied `in`
 fail_compilation/fail183.d(22): Error: attribute `in` cannot be added after `const`: remove `const`
-fail_compilation/fail183.d(23): Error: attribute `in` cannot be added after `scope`: remove `scope` and use `-preview=in`
+fail_compilation/fail183.d(23): Error: attribute `in` cannot be added after `scope`: remove `scope`
 fail_compilation/fail183.d(24): Error: attribute `in` cannot be added after `const`: remove `const`
 fail_compilation/fail183.d(25): Error: attribute `in` cannot be added after `const`: remove `const`
 ---
diff --git a/compiler/test/run.d b/compiler/test/run.d
index 3d1ddf883fbd..7510c1e2bbb2 100755
--- a/compiler/test/run.d
+++ b/compiler/test/run.d
@@ -158,7 +158,7 @@ Options:
         args = ["all"];
 
     // move any long-running tests to the front
-    static size_t sortKey(in ref Target target)
+    static size_t sortKey(const scope ref Target target)
     {
         const name = target.normalizedTestName;
         if (name.startsWith("runnable"))