Loop in _AC_COMPUTE_INT_COMPILE

[Pavel Roskin]

Hello!

The easiest way to reproduce the endless loop in the testsuite on HP-UX 
10.20 without GCC is:

AC_INIT
_AC_COMPUTE_INT_COMPILE(foo, ac_foo)
AC_OUTPUT

I don't remember what exactly the bundled compiler didn't like in the
expression that Autoconf wanted it to compile. I assume that compile-time
calculations is something that HP supports only in the separately
sold ANSI C compiler.

Anyway, configure should have failed gracefully instead of going to the
endless loop.

Regards,
Pavel Roskin