Integers and standard

Hi all,
I have a quick question. Is the following piece legal according to
fortran 77 and/or 90/95 standard?

integer i
data i/z'80000000'/

As far as my understanding goes, it is not but many compilers (intel,
xlf, gfortran 4.2) don't complain about it while others do (g77 gives
a warning, gfortran 4.3 an error).

The problem is that I need to declare this value in a Fortran
interface for a C package that uses the value internally (and, as you
know, this is a legal value in C). Do you know any way to work around
this?
Thanks a lot

Alfredo
.

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