re: port-macppc/54827: alloca() is broken in gcc 8 on powerpc

[matthew green <mrg%eterna.com.au@localhost>]

The following reply was made to PR port-macppc/54827; it has been noted by GNATS.

From: matthew green <mrg%eterna.com.au@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: port-macppc-maintainer%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
    netbsd-bugs%netbsd.org@localhost, uwe%stderr.spb.ru@localhost
Subject: re: port-macppc/54827: alloca() is broken in gcc 8 on powerpc
Date: Tue, 07 Jan 2020 15:15:18 +1100

 looking at the diff in external/gpl3/gcc/dist/gcc/config/rs6000,
 i see that we have a lot changes vs eg, vs gcc-8-3-0 import or
 the pkgsrc gcc 8 (which has zero rs6000/powerpc changes).
 
 they're for ppc64, but also several other ones.
 
 we also have patched config.gcc heavily for rs6000 and maybe
 more.
 
 things i would start with:
 - revert rs6000.c changes
 - revert config.gcc powerpc changes, and perhaps also the bit
   about default_gnu_indirect_function.
 - try to figure out how to revert type-definitions changes
 
 but nothing looks obvious to me.
 
 
 .mrg.