New test from Craig.

From-SVN: r21076

gcc/testsuite/g77.f-torture/execute/970816-3.f

+* Date: Wed, 13 Aug 1997 15:34:23 +0200 (METDST)
+* From: Claus Denk <denk@cica.es>
+* To: g77-alpha@gnu.ai.mit.edu
+* Subject: 970811 report - segfault bug on alpha still there
+*[...]
+* Now, the bug that I reported some weeks ago is still there, I'll post
+* the test program again:
+*
+        PROGRAM TEST
+C       a bug in g77-0.5.21 - alpha. Works with NSTART=0 and segfaults with
+C       NSTART=1 on the second write.
+        PARAMETER (NSTART=1,NADD=NSTART+1)
+        REAL AB(NSTART:NSTART)
+        AB(NSTART)=1.0
+        I=1
+        J=2
+        IND=I-J+NADD
+        write(*,*) AB(IND)
+        write(*,*) AB(I-J+NADD)
+        END