[Bug libstdc++/86553] libstdc++-v3 build failure on AIX 5.3

[bugzilla-gcc at thewrittenword dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86553

--- Comment #17 from The Written Word <bugzilla-gcc at thewrittenword dot com> ---
Created attachment 44456
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44456&action=edit
gcc/config/rs6000/aix53.h patch for gcc-5.5.0

Needed this patch to build 5.5.0 successfully on AIX 5.3.