src/expression.c

@@ -11821,6 +11821,8 @@ Expression *AssignExp::semantic(Scope *sc)
             (isUnaArrayOp(e2->op) || isBinArrayOp(e2->op)))
         {
             type = e1->type;
+            if (op == TOKconstruct) // Bugzilla 10282: tweak mutability of e1 element
+                e1->type = e1->type->nextOf()->mutableOf()->arrayOf();
             return arrayOp(this, sc);
         }
 

test/runnable/arrayop.d

@@ -649,6 +649,18 @@ void test9656()
     }
 }
 
+/************************************************************************/
+// 10282
+
+void test10282()
+{
+    int[3]           a1 = [1, 3, 6];
+    int[3]           a2 = [1, 3, 6] * 3;    // OK
+    const     int[3] a3 = a1[] * 3;         // OK <- Error
+    const     int[3] a4 = [1, 3, 6] * 3;    // OK <- Error
+    immutable int[3] a5 = [1, 3, 6] * 3;    // OK <- Error
+}
+
 /************************************************************************/
 // 10433
 
@@ -859,6 +871,7 @@ int main()
     test8390();
     test8651();
     test9656();
+    test10282();
     test10433();
     test10684a();
     test10684b();