PATCH: test suite: Don't assume that short is shorter than int.

[Jim Blandy <jimb at zwingli dot cygnus dot com>]

Fernando approved this patch in private conversation, so I committed
it.  If someone feels it needs further public discussion, just say so.

2000-04-26  Jim Blandy  <jimb@redhat.com>

        Don't assume that short is shorter than int.
        * gdb.base/exprs.exp ("print unsigned short == (~0)"): Don't
        assume that shorts are smaller than ints.  On a 16-bit machine,
        this isn't true.
        ("print unsigned char == (~0)"): Add test that verifies that ~0,
        an int, is not equal to ~0 stored in an unsigned char.  This tests
        the same thing that the previous test meant to, but works on
        16-bit machines, too.
        ("print unsigned char != (~0)"): Same test, complemented.

Index: exprs.exp
===================================================================
RCS file: /cvs/cvsfiles/devo/gdb/testsuite/gdb.base/exprs.exp,v
retrieving revision 1.18
diff -c -c -r1.18 exprs.exp
*** gdb/testsuite/gdb.base/exprs.exp    1999/06/25 23:46:18     1.18
--- gdb/testsuite/gdb.base/exprs.exp    2000/04/27 00:26:39
***************
*** 100,110 ****
  # FIXME:  gdb mishandles the cast (unsigned char) on the i960, so I've
  # set up an expected failure for this case.
  setup_xfail "i960-*-*" 1821
! test_expr "set variable v_unsigned_char=~0" "print v_unsigned_char == 0" "\\$\[0-9\]* = $false"  "print v_unsigned_char == ~0" "\\$\[0-9\]* = $false"  "print v_unsigned_char == (unsigned char)~0" "\\$\[0-9\]* = $true"  "print unsigned char == (~0)"
  # FIXME:  gdb mishandles the cast (unsigned char) on the i960, so I've
  # set up an expected failure for this case.
  setup_xfail "i960-*-*" 1821
! test_expr "set variable v_unsigned_char=~0" "print v_unsigned_char != 0" "\\$\[0-9\]* = $true"  "print v_unsigned_char != (unsigned char)~0" "\\$\[0-9\]* = $false"  "print unsigned char != (~0)"
  test_expr "set variable v_unsigned_char=~0" "print v_unsigned_char < 0" "\\$\[0-9\]* = $false"  "print v_unsigned_char < 127" "\\$\[0-9\]* = $false"  "print unsigned char < (~0)"
  test_expr "set variable v_unsigned_char=~0" "print v_unsigned_char > 0" "\\$\[0-9\]* = $true"  "print v_unsigned_char > 127" "\\$\[0-9\]* = $true"  "print unsigned char > (~0)"
  #
--- 100,110 ----
  # FIXME:  gdb mishandles the cast (unsigned char) on the i960, so I've
  # set up an expected failure for this case.
  setup_xfail "i960-*-*" 1821
! test_expr "set variable v_unsigned_char=~0" "print v_unsigned_char == 0" "\\$\[0-9\]* = $false"  "print v_unsigned_char == ~0" "\\$\[0-9\]* = $false"  "print v_unsigned_char == (unsigned char)~0" "\\$\[0-9\]* = $true" "print v_unsigned_char == ~0" "\\$\[0-9\]* = $false"  "print unsigned char == (~0)"
  # FIXME:  gdb mishandles the cast (unsigned char) on the i960, so I've
  # set up an expected failure for this case.
  setup_xfail "i960-*-*" 1821
! test_expr "set variable v_unsigned_char=~0" "print v_unsigned_char != 0" "\\$\[0-9\]* = $true"  "print v_unsigned_char != (unsigned char)~0" "\\$\[0-9\]* = $false"  "print v_unsigned_char != ~0" "\\$\[0-9\]* = $true" "print unsigned char != (~0)"
  test_expr "set variable v_unsigned_char=~0" "print v_unsigned_char < 0" "\\$\[0-9\]* = $false"  "print v_unsigned_char < 127" "\\$\[0-9\]* = $false"  "print unsigned char < (~0)"
  test_expr "set variable v_unsigned_char=~0" "print v_unsigned_char > 0" "\\$\[0-9\]* = $true"  "print v_unsigned_char > 127" "\\$\[0-9\]* = $true"  "print unsigned char > (~0)"
  #
***************
*** 139,145 ****
  test_expr "set variable v_unsigned_short=0x7FFF" "print v_unsigned_short < 0" "\\$\[0-9\]* = $false"  "print v_unsigned_short < 0x7FFF" "\\$\[0-9\]* = $false"  "print unsigned short <"
  test_expr "set variable v_unsigned_short=0x7FFF" "print v_unsigned_short > 0" "\\$\[0-9\]* = $true"  "print v_unsigned_short > 0x7FFF" "\\$\[0-9\]* = $false"  "print unsigned short >"
  # make short a minus
! test_expr "set variable v_unsigned_short=~0" "print v_unsigned_short == 0" "\\$\[0-9\]* = $false"  "print v_unsigned_short == ~0" "\\$\[0-9\]* = $false"  "print v_unsigned_short == (unsigned short)~0" "\\$\[0-9\]* = $true"  "print unsigned short == (~0)"
  test_expr "set variable v_unsigned_short=~0" "print v_unsigned_short != 0" "\\$\[0-9\]* = $true"  "print v_unsigned_short != (unsigned short)~0" "\\$\[0-9\]* = $false"  "print unsigned short != (~0)"
  test_expr "set variable v_unsigned_short=~0" "print v_unsigned_short < 0" "\\$\[0-9\]* = $false"  "print v_unsigned_short < 0x7FFF" "\\$\[0-9\]* = $false"  "print unsigned short < (~0)"
  test_expr "set variable v_unsigned_short=~0" "print v_unsigned_short > 0" "\\$\[0-9\]* = $true"  "print v_unsigned_short > 0x7FFF" "\\$\[0-9\]* = $true"  "print unsigned short > (~0)"
--- 139,145 ----
  test_expr "set variable v_unsigned_short=0x7FFF" "print v_unsigned_short < 0" "\\$\[0-9\]* = $false"  "print v_unsigned_short < 0x7FFF" "\\$\[0-9\]* = $false"  "print unsigned short <"
  test_expr "set variable v_unsigned_short=0x7FFF" "print v_unsigned_short > 0" "\\$\[0-9\]* = $true"  "print v_unsigned_short > 0x7FFF" "\\$\[0-9\]* = $false"  "print unsigned short >"
  # make short a minus
! test_expr "set variable v_unsigned_short=~0" "print v_unsigned_short == 0" "\\$\[0-9\]* = $false"  "print sizeof (v_unsigned_short) < sizeof (~0) && v_unsigned_short == ~0" "\\$\[0-9\]* = $false"  "print v_unsigned_short == (unsigned short)~0" "\\$\[0-9\]* = $true"  "print unsigned short == (~0)"
  test_expr "set variable v_unsigned_short=~0" "print v_unsigned_short != 0" "\\$\[0-9\]* = $true"  "print v_unsigned_short != (unsigned short)~0" "\\$\[0-9\]* = $false"  "print unsigned short != (~0)"
  test_expr "set variable v_unsigned_short=~0" "print v_unsigned_short < 0" "\\$\[0-9\]* = $false"  "print v_unsigned_short < 0x7FFF" "\\$\[0-9\]* = $false"  "print unsigned short < (~0)"
  test_expr "set variable v_unsigned_short=~0" "print v_unsigned_short > 0" "\\$\[0-9\]* = $true"  "print v_unsigned_short > 0x7FFF" "\\$\[0-9\]* = $true"  "print unsigned short > (~0)"