[egcs-19980608] Extremely serious comparison bug

[Jeffrey A Law]

  In message < 199806112044.QAA14249@calumny.jyacc.com >you write:
  > The following code runs incorrectly and prints "FAILED!" when compiled
  > with -O, -O1, or -O2 on x86 Linux. The reason is this sequence of
  > instructions for the comparison:
[ ... ]
Yup.  It's a real bug.  I haven't looked at it, but hopefully someone
will soon.

In the mean time, I've added it to the testsuite.


jeff