Passing big structs by value fails on hppa-linux

[John David Anglin]

This change

commit 43e4ad4d7b4bcc87ee447736a1172b2801a47908 (HEAD, refs/bisect/bad)
Author: Anthony Green <green@moxielogic.com>
Date:   Thu Jul 29 07:55:59 2021 -0400

    Test passing structs by value

exposed a problem on the hppa linux port:

Running ../../libffi/testsuite/libffi.call/call.exp ...
FAIL: libffi.call/struct_by_value_big.c -W -Wall -Wno-psabi -O0 execution test
FAIL: libffi.call/struct_by_value_big.c -W -Wall -Wno-psabi -O2 execution test

Currently, the code assumes that structs larger than 8 bytes are passed by hidden reference.

Probably, this has broken builds of python_cffi, etc.

Dave

-- 
John David Anglin  dave.anglin@bell.net