linux-kernel - compliation error with aio

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Date:   Mon, 16 Jul 2018 09:40:19 -0700
From:   Laura Abbott <labbott@...hat.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-aio@...ck.org
Subject: compliation error with aio_abi.h

Hi,

Fedora got a bug report https://bugzilla.redhat.com/show_bug.cgi?id=1601529
with 4.18-rc4:

Steps to Reproduce:
1.echo 'int f;' | gcc -include linux/aio_abi.h -xc -c - -o /dev/null

Actual results:
/usr/include/asm/signal.h:127:2: error: unknown type name ‘size_t’
   size_t ss_size;
   ^~~~~~
In file included from <command-line>:32:
/usr/include/linux/aio_abi.h:115:2: error: unknown type name ‘size_t’
   size_t  sigsetsize;
   ^~~~~~

Expected results:
no errors, as in Fedora 28 kernel-headers-4.17.4-200.fc28.x86_64)


This looks like the structure that was introduced with 7a074e96dee6
("aio: implement io_pgetevents") . is #include <linux/signal.h>
the correct header? This breaks compilation of nginx
https://bugzilla.redhat.com/show_bug.cgi?id=1597674

Thanks,
Laura