old-autovect-branch/gcc/testsuite/gfortran.dg/g77/13037.f

   1 c { dg-do run }
   2 c      PR optimization/13037
   3 c      Contributed by Kirill Smelkov
   4 c      bug symptom: zeta(kkzc) seems to reference to zeta(kkzc-1) instead
   5 c      with gcc-3.2.2 it is OK, so it is a regression.
   6 c
   7       subroutine bug1(expnt)
   8       implicit none
   9
  10       double precision zeta
  11       common /bug1_area/zeta(3)
  12
  13       double precision expnt(3)
  14
  15
  16       integer k, kkzc
  17
  18       kkzc=0
  19       do k=1,3
  20          kkzc = kkzc + 1
  21          zeta(kkzc) = expnt(k)
  22       enddo
  23
  24 c     the following line activates the bug
  25       call bug1_activator(kkzc)
  26       end
  27
  28
  29 c     dummy subroutine
  30       subroutine bug1_activator(inum)
  31       implicit none
  32       integer inum
  33       end
  34
  35
  36 c     test driver
  37       program test_bug1
  38       implicit none
  39
  40       double precision zeta
  41       common /bug1_area/zeta(3)
  42
  43       double precision expnt(3)
  44
  45       zeta(1) = 0.0d0
  46       zeta(2) = 0.0d0
  47       zeta(3) = 0.0d0
  48
  49       expnt(1) = 1.0d0
  50       expnt(2) = 2.0d0
  51       expnt(3) = 3.0d0
  52
  53       call bug1(expnt)
  54       if ((zeta(1).ne.1) .or. (zeta(2).ne.2) .or. (zeta(3).ne.3)) then
  55         call abort
  56       endif
  57
  58       end
  59