From 4465c6cb4d5b0a90337916643defb3cf0c506515 Mon Sep 17 00:00:00 2001
From: simonpj <unknown>
Date: Mon, 21 Dec 1998 10:45:36 +0000
Subject: [PATCH] [project @ 1998-12-21 10:45:36 by simonpj] Add
utils/Panic.lhs
---
ghc/compiler/utils/Panic.lhs | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
create mode 100644 ghc/compiler/utils/Panic.lhs
diff --git a/ghc/compiler/utils/Panic.lhs b/ghc/compiler/utils/Panic.lhs
new file mode 100644
index 000000000000..c3e48656b4a4
--- /dev/null
+++ b/ghc/compiler/utils/Panic.lhs
@@ -0,0 +1,35 @@
+%
+% (c) The GRASP Project, Glasgow University, 1992-1998
+%
+\section{Panic error messages}
+
+Defines basic funtions for printing error messages.
+
+It's hard to put these functions anywhere else without causing
+some unnecessary loops in the module dependency graph.
+
+\begin{code}
+module Panic ( panic, panic#, assertPanic, trace ) where
+
+import GlaExts( trace )
+
+#include "HsVersions.h"
+\end{code}
+
+\begin{code}
+panic :: String -> a
+panic x = error ("panic! (the `impossible' happened):\n\t"
+ ++ x ++ "\n\n"
+ ++ "Please report it as a compiler bug "
+ ++ "to glasgow-haskell-bugs@dcs.gla.ac.uk.\n\n" )
+
+-- #-versions because panic can't return an unboxed int, and that's
+-- what TAG_ is with GHC at the moment. Ugh. (Simon)
+-- No, man -- Too Beautiful! (Will)
+
+panic# :: String -> FAST_INT
+panic# s = case (panic s) of () -> ILIT(0)
+
+assertPanic :: String -> Int -> a
+assertPanic file line = panic ("ASSERT failed! file " ++ file ++ ", line " ++ show line)
+\end{code}
--
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