Improve opBinary error messages (#20789)

changelog/dmd.error-messages.dd

@@ -39,6 +39,51 @@ app.d(6):        `app.U` declared here
 */
 ---
 
+When overloading binary operators, and `opBinary` or `opBinaryRight` is missing or doesn't match,
+the error message now points out the problem:
+
+---
+struct Str {}
+
+struct Number
+{
+    int x;
+    int opBinary(string op : "+")(int rhs) => this.x + x;
+}
+
+void f(Str str, Number number)
+{
+    const s = str ~ "hey";
+    const n = number + "oops";
+}
+
+/*
+Before:
+
+app.d(12): Error: incompatible types for `(str) ~ ("hey")`: `Str` and `string`
+    const s = str ~ "hey";
+              ^
+app.d(13): Error: incompatible types for `(number) + ("oops")`: `Number` and `string`
+    const n = number + "oops";
+
+After:
+
+app.d(12): Error: operator `~` is not defined for type `Str`
+    const s = str ~ "hey";
+              ^
+app.d(2):        perhaps overload the operator with `auto opBinary(string op : "~")(string rhs) {}`
+struct Str {}
+^
+app.d(13): Error: function `test_.Number.opBinary!"+".opBinary(int rhs)` is not callable using argument types `(string)`
+    const n = number + "oops";
+              ^
+app.d(13):        cannot pass argument `"oops"` of type `string` to parameter `int rhs`
+app.d(7):        `opBinary` defined here
+    int opBinary(string op : "+")(int rhs) => this.x + x;
+        ^
+*/
+---
+
 Furthermore:
 
 - D1 operator overloading functions (`opAdd`, `opDot`) are completely removed and no longer mentioned in error messages specifically.

compiler/src/dmd/dcast.d

@@ -4138,7 +4138,7 @@ Expression typeCombine(BinExp be, Scope* sc)
 {
     Expression errorReturn()
     {
-        Expression ex = be.incompatibleTypes();
+        Expression ex = be.incompatibleTypes(sc);
         if (ex.op == EXP.error)
             return ex;
         return ErrorExp.get();

compiler/src/dmd/expressionsem.d

@@ -377,7 +377,7 @@ private Expression incompatibleTypes(UnaExp e)
  * Returns:
  *  ErrorExp
  */
-extern (D) Expression incompatibleTypes(BinExp e)
+extern (D) Expression incompatibleTypes(BinExp e, Scope* sc = null)
 {
     if (e.e1.type.toBasetype() == Type.terror)
         return e.e1;
@@ -386,6 +386,10 @@ extern (D) Expression incompatibleTypes(BinExp e)
 
     // CondExp uses 'a ? b : c' but we're comparing 'b : c'
     const(char)* thisOp = (e.op == EXP.question) ? ":" : EXPtoString(e.op).ptr;
+
+    if (sc && suggestBinaryOverloads(e, sc))
+        return ErrorExp.get();
+
     if (e.e1.op == EXP.type || e.e2.op == EXP.type)
     {
         error(e.loc, "incompatible types for `(%s) %s (%s)`: cannot use `%s` with types",
@@ -12092,6 +12096,9 @@ private extern (C++) final class ExpressionSemanticVisitor : Visitor
             return;
         }
 
+        if (exp.suggestBinaryOverloads(sc))
+            return setError();
+
         if (exp.checkArithmeticBin())
             return setError();
 
@@ -12245,6 +12252,9 @@ private extern (C++) final class ExpressionSemanticVisitor : Visitor
             return;
         }
 
+        if (exp.suggestBinaryOverloads(sc))
+            return setError();
+
         if (exp.checkArithmeticBin())
             return setError();
 
@@ -12578,6 +12588,12 @@ private extern (C++) final class ExpressionSemanticVisitor : Visitor
             return true;
         }
 
+        if (exp.suggestBinaryOverloads(sc))
+        {
+            setError();
+            return true;
+        }
+
         if (exp.checkArithmeticBin() || exp.checkSharedAccessBin(sc))
         {
             setError();
@@ -12792,6 +12808,9 @@ private extern (C++) final class ExpressionSemanticVisitor : Visitor
             return;
         }
 
+        if (exp.suggestBinaryOverloads(sc))
+            return setError();
+
         if (exp.checkIntegralBin() || exp.checkSharedAccessBin(sc))
             return setError();
 
@@ -12862,6 +12881,10 @@ private extern (C++) final class ExpressionSemanticVisitor : Visitor
             result = exp.incompatibleTypes();
             return;
         }
+
+        if (exp.suggestBinaryOverloads(sc))
+            return setError();
+
         if (exp.checkIntegralBin() || exp.checkSharedAccessBin(sc))
             return setError();
 
@@ -13119,7 +13142,7 @@ private extern (C++) final class ExpressionSemanticVisitor : Visitor
             return setError();
 
         case Tarray, Tsarray:
-            result = exp.incompatibleTypes();
+            result = exp.incompatibleTypes(sc);
             errorSupplemental(exp.loc, "`in` is only allowed on associative arrays");
             const(char)* slice = (t2b.ty == Tsarray) ? "[]" : "";
             errorSupplemental(exp.loc, "perhaps use `std.algorithm.find(%s, %s%s)` instead",
@@ -13127,7 +13150,7 @@ private extern (C++) final class ExpressionSemanticVisitor : Visitor
             return;
 
         default:
-            result = exp.incompatibleTypes();
+            result = exp.incompatibleTypes(sc);
             return;
         }
         result = exp;

compiler/src/dmd/opover.d

@@ -71,6 +71,29 @@ bool isCommutative(EXP op) @safe
     return false;
 }
 
+/// Returns: whether `op` can be overloaded with `opBinary`
+private bool hasOpBinary(EXP op) pure @safe
+{
+    switch (op)
+    {
+        case EXP.add: return true;
+        case EXP.min: return true;
+        case EXP.mul: return true;
+        case EXP.div: return true;
+        case EXP.mod: return true;
+        case EXP.and: return true;
+        case EXP.or: return true;
+        case EXP.xor: return true;
+        case EXP.leftShift: return true;
+        case EXP.rightShift: return true;
+        case EXP.unsignedRightShift: return true;
+        case EXP.concatenate: return true;
+        case EXP.pow: return true;
+        case EXP.in_: return true;
+        default: return false;
+    }
+}
+
 /*******************************************
  * Helper function to turn operator into template argument list
  */
@@ -591,12 +614,63 @@ Expression opOverloadBinary(BinExp e, Scope* sc, Type[2] aliasThisStop)
         s_r = null;
 
     bool choseReverse;
-    if (auto res = pickBestBinaryOverload(sc, opToArg(sc, e.op), s, s_r, e, choseReverse))
-        return res;
+    if (auto result = pickBestBinaryOverload(sc, opToArg(sc, e.op), s, s_r, e, choseReverse))
+        return result;
 
     return binAliasThis(e, sc, aliasThisStop);
 }
 
+/**
+ * If applicable, print an error relating to implementing / fixing `opBinary` functions.
+ * Params:
+ *   e = binary operation
+ *   sc = scope to try `opBinary!""` semantic in for error messages
+ * Returns: `true` when an error related to `opBinary` was printed
+ */
+bool suggestBinaryOverloads(BinExp e, Scope* sc)
+{
+    if (!e.op.hasOpBinary)
+        return false;
+
+    AggregateDeclaration ad1 = isAggregate(e.e1.type);
+    AggregateDeclaration ad2 = isAggregate(e.e2.type);
+
+    if (ad1)
+    {
+        if (Dsymbol s = search_function(ad1, Id.opBinary))
+        {
+            dotTemplate(e.e1, Id.opBinary, opToArg(sc, e.op), e.e2).expressionSemantic(sc);
+            errorSupplemental(s.loc, "`opBinary` defined here");
+            return true;
+        }
+        error(e.loc, "operator `%s` is not defined for type `%s`", EXPtoString(e.op).ptr, e.e1.type.toChars);
+        errorSupplemental(ad1.loc, "perhaps overload the operator with `auto opBinary(string op : \"%s\")(%s rhs) {}`", EXPtoString(e.op).ptr, e.e2.type.toChars);
+        return true;
+    }
+    else if (ad2)
+    {
+        if (Dsymbol s_r = search_function(ad1, Id.opBinaryRight))
+        {
+            dotTemplate(e.e2, Id.opBinaryRight, opToArg(sc, e.op), e.e1).expressionSemantic(sc);
+            errorSupplemental(s_r.loc, "`opBinaryRight` defined here");
+            return true;
+        }
+        error(e.loc, "operator `%s` is not defined for type `%s`", EXPtoString(e.op).ptr, e.e2.type.toChars);
+        errorSupplemental(ad2.loc, "perhaps overload the operator with `auto opBinaryRight(string op : \"%s\")(%s rhs) {}`", EXPtoString(e.op).ptr, e.e1.type.toChars);
+        return true;
+    }
+    return false;
+}
+
+// Helper to construct e.id!tiargs(arg)
+private Expression dotTemplate(Expression e, Identifier id, Objects* tiargs, Expression arg)
+{
+    auto ti = new DotTemplateInstanceExp(e.loc, e, id, tiargs);
+    auto args = new Expressions();
+    args.push(arg);
+    return new CallExp(e.loc, ti, args);
+}
+
 Expression opOverloadEqual(EqualExp e, Scope* sc, Type[2] aliasThisStop)
 {
     Type t1 = e.e1.type.toBasetype();
@@ -990,7 +1064,7 @@ private Expression pickBestBinaryOverload(Scope* sc, Objects* tiargs, Dsymbol s,
 
     if (s)
     {
-        functionResolve(m, s, e.loc, sc, tiargs, e.e1.type, ArgumentList(args2));
+        functionResolve(m, s, e.loc, sc, tiargs, e.e1.type, ArgumentList(args2), null);
         if (m.lastf && (m.lastf.errors || m.lastf.hasSemantic3Errors()))
             return ErrorExp.get();
     }
@@ -998,7 +1072,7 @@ private Expression pickBestBinaryOverload(Scope* sc, Objects* tiargs, Dsymbol s,
     int count = m.count;
     if (s_r)
     {
-        functionResolve(m, s_r, e.loc, sc, tiargs, e.e2.type, ArgumentList(args1));
+        functionResolve(m, s_r, e.loc, sc, tiargs, e.e2.type, ArgumentList(args1), null);
         if (m.lastf && (m.lastf.errors || m.lastf.hasSemantic3Errors()))
             return ErrorExp.get();
     }

compiler/test/fail_compilation/dep_d1_ops.d

@@ -2,89 +2,135 @@
 REQUIRED_ARGS:
 TEST_OUTPUT:
 ---
-fail_compilation/dep_d1_ops.d(198): Error: incompatible types for `(s) + (1)`: `S` and `int`
-fail_compilation/dep_d1_ops.d(199): Error: incompatible types for `(1) + (s)`: `int` and `S`
-fail_compilation/dep_d1_ops.d(200): Error: incompatible types for `(s) - (1)`: `S` and `int`
-fail_compilation/dep_d1_ops.d(201): Error: incompatible types for `(1) - (s)`: `int` and `S`
-fail_compilation/dep_d1_ops.d(202): Error: incompatible types for `(s) * (1)`: `S` and `int`
-fail_compilation/dep_d1_ops.d(203): Error: incompatible types for `(1) * (s)`: `int` and `S`
-fail_compilation/dep_d1_ops.d(204): Error: incompatible types for `(s) / (1)`: `S` and `int`
-fail_compilation/dep_d1_ops.d(205): Error: incompatible types for `(1) / (s)`: `int` and `S`
-fail_compilation/dep_d1_ops.d(206): Error: incompatible types for `(s) % (1)`: `S` and `int`
-fail_compilation/dep_d1_ops.d(207): Error: incompatible types for `(1) % (s)`: `int` and `S`
-fail_compilation/dep_d1_ops.d(209): Error: incompatible types for `(s) & (1)`: `S` and `int`
-fail_compilation/dep_d1_ops.d(210): Error: incompatible types for `(s) | (1)`: `S` and `int`
-fail_compilation/dep_d1_ops.d(211): Error: incompatible types for `(s) ^ (1)`: `S` and `int`
-fail_compilation/dep_d1_ops.d(213): Error: `s` is not of integral type, it is a `S`
-fail_compilation/dep_d1_ops.d(214): Error: `s` is not of integral type, it is a `S`
-fail_compilation/dep_d1_ops.d(215): Error: `s` is not of integral type, it is a `S`
-fail_compilation/dep_d1_ops.d(216): Error: `s` is not of integral type, it is a `S`
-fail_compilation/dep_d1_ops.d(217): Error: `s` is not of integral type, it is a `S`
-fail_compilation/dep_d1_ops.d(218): Error: `s` is not of integral type, it is a `S`
-fail_compilation/dep_d1_ops.d(220): Error: incompatible types for `(s) ~ (1)`: `S` and `int`
-fail_compilation/dep_d1_ops.d(221): Error: incompatible types for `(1) ~ (s)`: `int` and `S`
-fail_compilation/dep_d1_ops.d(223): Error: operator `+` is not defined for `s` of type `S`
-fail_compilation/dep_d1_ops.d(224): Error: operator `-` is not defined for `s` of type `S`
-fail_compilation/dep_d1_ops.d(225): Error: `s` is not of integral type, it is a `S`
-fail_compilation/dep_d1_ops.d(226): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(227): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(228): Error: can only `*` a pointer, not a `S`
-fail_compilation/dep_d1_ops.d(230): Error: incompatible types for `(s) in (1)`: `S` and `int`
-fail_compilation/dep_d1_ops.d(231): Error: incompatible types for `(1) in (s)`: `int` and `S`
-fail_compilation/dep_d1_ops.d(233): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(234): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(235): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(236): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(237): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(238): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(239): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(240): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(241): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(242): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(243): Error: `s` is not a scalar, it is a `S`
-fail_compilation/dep_d1_ops.d(244): Error: cannot append type `int` to type `S`
-fail_compilation/dep_d1_ops.d(248): Error: incompatible types for `(c) + (1)`: `dep_d1_ops.C` and `int`
-fail_compilation/dep_d1_ops.d(249): Error: incompatible types for `(1) + (c)`: `int` and `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(250): Error: incompatible types for `(c) - (1)`: `dep_d1_ops.C` and `int`
-fail_compilation/dep_d1_ops.d(251): Error: incompatible types for `(1) - (c)`: `int` and `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(252): Error: incompatible types for `(c) * (1)`: `dep_d1_ops.C` and `int`
-fail_compilation/dep_d1_ops.d(253): Error: incompatible types for `(1) * (c)`: `int` and `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(254): Error: incompatible types for `(c) / (1)`: `dep_d1_ops.C` and `int`
-fail_compilation/dep_d1_ops.d(255): Error: incompatible types for `(1) / (c)`: `int` and `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(256): Error: incompatible types for `(c) % (1)`: `dep_d1_ops.C` and `int`
-fail_compilation/dep_d1_ops.d(257): Error: incompatible types for `(1) % (c)`: `int` and `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(259): Error: incompatible types for `(c) & (1)`: `dep_d1_ops.C` and `int`
-fail_compilation/dep_d1_ops.d(260): Error: incompatible types for `(c) | (1)`: `dep_d1_ops.C` and `int`
-fail_compilation/dep_d1_ops.d(261): Error: incompatible types for `(c) ^ (1)`: `dep_d1_ops.C` and `int`
-fail_compilation/dep_d1_ops.d(263): Error: `c` is not of integral type, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(264): Error: `c` is not of integral type, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(265): Error: `c` is not of integral type, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(266): Error: `c` is not of integral type, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(267): Error: `c` is not of integral type, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(268): Error: `c` is not of integral type, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(270): Error: incompatible types for `(c) ~ (1)`: `dep_d1_ops.C` and `int`
-fail_compilation/dep_d1_ops.d(271): Error: incompatible types for `(1) ~ (c)`: `int` and `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(273): Error: operator `+` is not defined for `c` of type `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(274): Error: operator `-` is not defined for `c` of type `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(275): Error: `c` is not of integral type, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(276): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(277): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(278): Error: can only `*` a pointer, not a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(280): Error: incompatible types for `(c) in (1)`: `dep_d1_ops.C` and `int`
-fail_compilation/dep_d1_ops.d(281): Error: incompatible types for `(1) in (c)`: `int` and `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(283): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(284): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(285): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(286): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(287): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(288): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(289): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(290): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(291): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(292): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(293): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(294): Error: cannot append type `int` to type `dep_d1_ops.C`
-fail_compilation/dep_d1_ops.d(303): Error: `nd` is not of integral type, it is a `dep_d1_ops.NoDeprecation`
+fail_compilation/dep_d1_ops.d(244): Error: operator `+` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : "+")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(245): Error: operator `+` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinaryRight(string op : "+")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(246): Error: operator `-` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : "-")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(247): Error: operator `-` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinaryRight(string op : "-")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(248): Error: operator `*` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : "*")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(249): Error: operator `*` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinaryRight(string op : "*")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(250): Error: operator `/` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : "/")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(251): Error: operator `/` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinaryRight(string op : "/")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(252): Error: operator `%` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : "%")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(253): Error: operator `%` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinaryRight(string op : "%")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(255): Error: operator `&` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : "&")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(256): Error: operator `|` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : "|")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(257): Error: operator `^` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : "^")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(259): Error: operator `<<` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : "<<")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(260): Error: operator `<<` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinaryRight(string op : "<<")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(261): Error: operator `>>` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : ">>")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(262): Error: operator `>>` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinaryRight(string op : ">>")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(263): Error: operator `>>>` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : ">>>")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(264): Error: operator `>>>` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinaryRight(string op : ">>>")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(266): Error: operator `~` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : "~")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(267): Error: operator `~` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinaryRight(string op : "~")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(269): Error: operator `+` is not defined for `s` of type `S`
+fail_compilation/dep_d1_ops.d(270): Error: operator `-` is not defined for `s` of type `S`
+fail_compilation/dep_d1_ops.d(271): Error: `s` is not of integral type, it is a `S`
+fail_compilation/dep_d1_ops.d(272): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(273): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(274): Error: can only `*` a pointer, not a `S`
+fail_compilation/dep_d1_ops.d(276): Error: operator `in` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinary(string op : "in")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(277): Error: operator `in` is not defined for type `S`
+fail_compilation/dep_d1_ops.d(137):        perhaps overload the operator with `auto opBinaryRight(string op : "in")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(279): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(280): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(281): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(282): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(283): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(284): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(285): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(286): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(287): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(288): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(289): Error: `s` is not a scalar, it is a `S`
+fail_compilation/dep_d1_ops.d(290): Error: cannot append type `int` to type `S`
+fail_compilation/dep_d1_ops.d(294): Error: operator `+` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : "+")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(295): Error: operator `+` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinaryRight(string op : "+")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(296): Error: operator `-` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : "-")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(297): Error: operator `-` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinaryRight(string op : "-")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(298): Error: operator `*` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : "*")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(299): Error: operator `*` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinaryRight(string op : "*")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(300): Error: operator `/` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : "/")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(301): Error: operator `/` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinaryRight(string op : "/")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(302): Error: operator `%` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : "%")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(303): Error: operator `%` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinaryRight(string op : "%")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(305): Error: operator `&` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : "&")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(306): Error: operator `|` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : "|")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(307): Error: operator `^` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : "^")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(309): Error: operator `<<` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : "<<")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(310): Error: operator `<<` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinaryRight(string op : "<<")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(311): Error: operator `>>` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : ">>")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(312): Error: operator `>>` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinaryRight(string op : ">>")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(313): Error: operator `>>>` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : ">>>")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(314): Error: operator `>>>` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinaryRight(string op : ">>>")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(316): Error: operator `~` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : "~")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(317): Error: operator `~` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinaryRight(string op : "~")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(319): Error: operator `+` is not defined for `c` of type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(320): Error: operator `-` is not defined for `c` of type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(321): Error: `c` is not of integral type, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(322): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(323): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(324): Error: can only `*` a pointer, not a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(326): Error: operator `in` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinary(string op : "in")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(327): Error: operator `in` is not defined for type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(188):        perhaps overload the operator with `auto opBinaryRight(string op : "in")(int rhs) {}`
+fail_compilation/dep_d1_ops.d(329): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(330): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(331): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(332): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(333): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(334): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(335): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(336): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(337): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(338): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(339): Error: `c` is not a scalar, it is a `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(340): Error: cannot append type `int` to type `dep_d1_ops.C`
+fail_compilation/dep_d1_ops.d(349): Error: `nd` is not of integral type, it is a `dep_d1_ops.NoDeprecation`
 ---
 */
 

compiler/test/fail_compilation/diag12063.d

@@ -1,13 +1,14 @@
 /*
 TEST_OUTPUT:
 ---
-fail_compilation/diag12063.d(19): Error: cannot check `diag12063.Bar.b` value for overflow
-fail_compilation/diag12063.d(16): Error: no property `max` for type `Foo`, perhaps `import std.algorithm;` is needed?
-fail_compilation/diag12063.d(19): Error: cannot generate value for `diag12063.Bar.b`
-fail_compilation/diag12063.d(19): Error: incompatible types for `(Foo()) + (1)`: `Bar` and `int`
-fail_compilation/diag12063.d(29): Error: cannot check `diag12063.b` value for overflow
-fail_compilation/diag12063.d(29): Error: incompatible types for `(S()) == (1)`: `S` and `int`
-fail_compilation/diag12063.d(38): Error: enum member `diag12063.d` initialization with `__anonymous.c+1` causes overflow for type `Q`
+fail_compilation/diag12063.d(20): Error: cannot check `diag12063.Bar.b` value for overflow
+fail_compilation/diag12063.d(17): Error: no property `max` for type `Foo`, perhaps `import std.algorithm;` is needed?
+fail_compilation/diag12063.d(20): Error: cannot generate value for `diag12063.Bar.b`
+fail_compilation/diag12063.d(20): Error: operator `+` is not defined for type `Bar`
+fail_compilation/diag12063.d(15):        perhaps overload the operator with `auto opBinary(string op : "+")(int rhs) {}`
+fail_compilation/diag12063.d(30): Error: cannot check `diag12063.b` value for overflow
+fail_compilation/diag12063.d(30): Error: incompatible types for `(S()) == (1)`: `S` and `int`
+fail_compilation/diag12063.d(39): Error: enum member `diag12063.d` initialization with `__anonymous.c+1` causes overflow for type `Q`
 ---
 */
 

compiler/test/fail_compilation/diag16499.d

@@ -1,8 +1,10 @@
 /*
 TEST_OUTPUT:
 ---
-fail_compilation/diag16499.d(22): Error: incompatible types for `(2) in (foo)`: `int` and `A`
-fail_compilation/diag16499.d(24): Error: incompatible types for `(1.0) in (bar)`: `double` and `B`
+fail_compilation/diag16499.d(24): Error: operator `in` is not defined for type `A`
+fail_compilation/diag16499.d(11):        perhaps overload the operator with `auto opBinaryRight(string op : "in")(int rhs) {}`
+fail_compilation/diag16499.d(26): Error: operator `in` is not defined for type `B`
+fail_compilation/diag16499.d(12):        perhaps overload the operator with `auto opBinaryRight(string op : "in")(double rhs) {}`
 ---
 */
 

compiler/test/fail_compilation/fail297.d

@@ -1,7 +1,8 @@
 /*
 TEST_OUTPUT:
 ---
-fail_compilation/fail297.d(30): Error: operator `+` is not defined for `Bar()` of type `Bar`
+fail_compilation/fail297.d(31): Error: operator `+` is not defined for type `Bar`
+fail_compilation/fail297.d(25):        perhaps overload the operator with `auto opBinary(string op : "+")(const(Bar) rhs) {}`
 ---
 */
 

compiler/test/fail_compilation/fail3.d

@@ -1,7 +1,8 @@
 /*
 TEST_OUTPUT:
 ---
-fail_compilation/fail3.d(41): Error: operator `+` is not defined for `a` of type `vec2`
+fail_compilation/fail3.d(42): Error: operator `+` is not defined for type `vec2`
+fail_compilation/fail3.d(13):        perhaps overload the operator with `auto opBinary(string op : "+")(vec2 rhs) {}`
 ---
 */
 

compiler/test/fail_compilation/test22329.d

@@ -4,9 +4,10 @@
 TEST_OUTPUT:
 ---
 fail_compilation/imports/imp22329.d(3): Error: no property `values` for type `test22329.Foo`
-fail_compilation/test22329.d(13):        struct `Foo` defined here
-fail_compilation/imports/imp22329.d(3): Error: incompatible types for `(arg) + (1)`: `Foo` and `int`
-fail_compilation/test22329.d(21): Error: template instance `imp22329.func!(Foo)` error instantiating
+fail_compilation/test22329.d(14):        struct `Foo` defined here
+fail_compilation/imports/imp22329.d(3): Error: operator `+` is not defined for type `Foo`
+fail_compilation/test22329.d(14):        perhaps overload the operator with `auto opBinary(string op : "+")(int rhs) {}`
+fail_compilation/test22329.d(22): Error: template instance `imp22329.func!(Foo)` error instantiating
 ---
 */