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-rw-r--r--ghc/compiler/HsVersions.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/ghc/compiler/HsVersions.h b/ghc/compiler/HsVersions.h
index 955c5f9b0e..55fedfbf82 100644
--- a/ghc/compiler/HsVersions.h
+++ b/ghc/compiler/HsVersions.h
@@ -14,8 +14,10 @@ you will screw up the layout where they are used in case expressions!
#ifdef DEBUG
#define ASSERT(e) if (not (e)) then (assertPanic __FILE__ __LINE__) else
+#define ASSERT2(e,msg) if (not (e)) then (assertPprPanic __FILE__ __LINE__ (msg)) else
#else
#define ASSERT(e)
+#define ASSERT2(e,msg)
#endif
#if __STDC__