On 9/13/21 7:11 AM, Eric Blake wrote:

> I'm not sure how much of gnulib still tries to cater to C89,
> vs. assuming C99.

Gnulib no longer bothers with porting back to C89. However, this issue 
is due to a C99 compiler being pedantic, so we should fix it. I 
installed the attached into Gnulib on Savannah; please give it a try. 
With this patch, on my Solaris 10 sparc platform, Oracle Developer 
Studio 12.6 c99 issues a warning but it is not fatal, and that should be 
good enough.