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diff --git a/gcc/testsuite/gcc.wendy/gnu12.c b/gcc/testsuite/gcc.wendy/gnu12.c
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+/*
+Deceived: by hoptoad.uucp (1.1/SMI-3.0DEV3)
+	id AA08037; Wed, 1 Apr 87 03:40:07 PST
+Message-Id: <8704010914.AA23555@prep.ai.mit.edu>
+Date: 31 Mar 1987 2359-PST (Tuesday)
+From: Malcolm Wing <wing@sonoma.stanford.edu>
+To: bug-gcc@prep.ai.mit.edu
+Subject: Clobber nil bug and Tail recursion bug
+
+BUG 2
+    When compiling Ackerman for the vax it tries to remove the
+tail recursion. However the tail recursive call contains another
+call so the update (used to be parameter passing) can't be done
+until the imbedded call returns.
+
+SOURCE
+
+/* Ackerman's function */
+main()
+{
+	int i;
+
+	i = A(3,6);
+	if (i == 509)
+		printf("Test passed\n");
+	else
+		printf("FAILED ackerman's(3, 6): %d\n", i);
+}
+
+A(x,y)
+int x,y;
+{
+    if(x==0) return(++y);
+    if(y==0) return(A(--x,1));
+    return(A(x-1,A(x,--y)));
+    }