gcc/testsuite/g77.f-torture/compile/980310-7.f

   1 C From: "David C. Doherty" <doherty@networkcs.com>
   2 C Message-Id: <199711171846.MAA27947@uh.msc.edu>
   3 C Subject: g77: auto arrays + goto = no go
   4 C To: egcs-bugs@cygnus.com
   5 C Date: Mon, 17 Nov 1997 12:46:27 -0600 (CST)
   6
   7 C I sent the following to fortran@gnu.ai.mit.edu, and Dave Love
   8 C replied that he was able to reproduce it on rs6000-aix; not on
   9 C others. He suggested that I send it to egcs-bugs.
  10
  11 C Hi - I've observed the following behavior regarding
  12 C automatic arrays and gotos.  Seems similar to what I found
  13 C in the docs about computed gotos (but not exactly the same).
  14 C
  15 C I suspect from the nature of the error msg that it's in the GBE.
  16 C
  17 C I'm using egcs-971105, under linux-ppc.
  18 C
  19 C I also observed the same in g77-0.5.19 (and gcc 2.7.2?).
  20 C
  21 C I'd appreciate any advice on this.  thanks for the great work.
  22 C --
  23 C >cat testg77.f
  24       subroutine testg77(n, a)
  25 c
  26       implicit none
  27 c
  28       integer n
  29       real a(n)
  30       real b(n)
  31       integer i
  32 c
  33       do i = 1, 10
  34         if (i .gt. 4) goto 100
  35         write(0, '(i2)')i
  36       enddo
  37 c
  38       goto 200
  39 100   continue
  40 200   continue
  41 c
  42       return
  43       end
  44 C >g77 -c testg77.f
  45 C testg77.f: In subroutine `testg77':
  46 C testg77.f:19: label `200' used before containing binding contour
  47 C testg77.f:18: label `100' used before containing binding contour
  48 C --
  49 C If I comment out the b(n) line or replace it with, e.g., b(10),
  50 C it compiles fine.