Re: max_align_t on RHEL 7.1 s390x

[Paul Eggert]

Another possibility that may be simpler for GDB, is to change its configure.ac 
files to require C99 or later everywhere. At this point it's more trouble than 
it's worth to tweak source code or makefiles to cater to compilers operating in 
C89 mode. Just tell your C compiler to support C99-or-better everywhere, and 
your life will surely be simpler.