fix Issue 14685 - Silent incorrect behavior with enforce and custom e…

…xception

std/exception.d

@@ -394,7 +394,7 @@ private void bailOut(E : Throwable = Exception)(string file, size_t line, in cha
     }
     else
     {
-        static assert("Expected this(string, string, size_t) or this(string, size_t)" ~
+        static assert(0, "Expected this(string, string, size_t) or this(string, size_t)" ~
             " constructor for " ~ __traits(identifier, E));
     }
 }
@@ -509,6 +509,17 @@ deprecated unittest
     enforce!(S, __FILE__, __LINE__)(s, "");
 }
 
+unittest
+{
+    // Issue 14685
+
+    class E : Exception
+    {
+        this() { super("Not found"); }
+    }
+    static assert(!__traits(compiles, { enforce!E(false); }));
+}
+
 /++
     If $(D !!value) is true, $(D value) is returned. Otherwise, $(D ex) is thrown.