X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=sidebyside;f=compiler%2Ftypecheck%2FTcSimplify.lhs;h=30718c298e256b7715016a00b80aa919c58cf49f;hb=54fa96ad5bd53058c0da9b9f3eb4b321f2ddbc16;hp=b771502c0914833146005f0d94819edc04caf089;hpb=ce43dfc719eda4752d8de67cefb61d03b05b8e3c;p=ghc-hetmet.git

diff --git a/compiler/typecheck/TcSimplify.lhs b/compiler/typecheck/TcSimplify.lhs
index b771502..30718c2 100644
--- a/compiler/typecheck/TcSimplify.lhs
+++ b/compiler/typecheck/TcSimplify.lhs
@@ -2890,7 +2890,7 @@ tcSimplifyDefault theta
     if null irreds then
 	returnM ()
     else
-	failM
+	traceTc (ptext SLIT("tcSimplifyDefault failing")) >> failM
   where
     doc = ptext SLIT("default declaration")
 \end{code}