Re: Fix for compiling m4 on VAX

Paul Eggert <[email protected]> Tue, 29 Oct 2013 21:14:44 -0700
Newsgroups gmane.comp.lib.gnulib.bugs,gmane.comp.gnu.m4.patches
Organization UCLA Computer Science Department
Message-ID <[email protected]>
Eric Blake wrote:
> This change needs to be incorporated upstream in gnulib (cc'd); from
> there it will find its way into the next m4 release.

What compiler is being used, and what macros does this compiler
predefine?

More generally:

Why is the change needed?  What happens, exactly, if you don't
have the change?

The VAX doesn't have NaNs at all, right?  So that section of
code shouldn't be compiled at all: isnan should simply return
0 without inspecting its argument.  That is the real bug that
needs to get fixed here.