From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id D6F7A3858C5F; Wed,  7 Feb 2024 21:36:08 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D6F7A3858C5F
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1707341768;
	bh=rHGVdqhb2mHhjzQjPUNp00h+I7mkPSL3v0fm5T1TdXY=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=AjGP8W1Di7pmS9ZHQqVp/9kZxQjfPGImxjQRWz2z5q+gbm3QGZzA1J+F7Axc66egK
	 /Qhx5sdN4aZlgDyhabDoJALShU6rTFBJRYS7dzomZu0KqMHW3n8CBPFw6klTb8gmHa
	 OxdH/Bj9ksOjyQhvnRHMNbJP7ygumY5tXrrIlNvc=
From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/113792] error: '__size_t' was not declared in this
 scope
Date: Wed, 07 Feb 2024 21:36:08 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: libstdc++
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: redi at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-113792-4-x1nv58tOQq@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-113792-4@http.gcc.gnu.org/bugzilla/>
References: <bug-113792-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113792

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to John David Anglin from comment #0)
> stdlib.h is fixed on this target.  The #include_next pulled stdlib.h
> from /usr/include instead of ./prev-gcc/include-fixed/stdlib.h.

Why did that happen?

For my systems, the include search list is:

ignoring nonexistent directory
"/home/jwakely/gcc/14/lib/gcc/x86_64-pc-linux-gnu/14.0.1/../../../../x86_64=
-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/jwakely/src/benchmark/include/

/home/jwakely/gcc/14/lib/gcc/x86_64-pc-linux-gnu/14.0.1/../../../../include=
/c++/14.0.1

/home/jwakely/gcc/14/lib/gcc/x86_64-pc-linux-gnu/14.0.1/../../../../include=
/c++/14.0.1/x86_64-pc-linux-gnu

/home/jwakely/gcc/14/lib/gcc/x86_64-pc-linux-gnu/14.0.1/../../../../include=
/c++/14.0.1/backward
 /home/jwakely/gcc/14/lib/gcc/x86_64-pc-linux-gnu/14.0.1/include
 /usr/local/include
 /home/jwakely/gcc/14/include
 /home/jwakely/gcc/14/lib/gcc/x86_64-pc-linux-gnu/14.0.1/include-fixed
 /usr/include
End of search list.

Why is /usr/include coming before the include-fixed dir? That seems wrong.

I'm extremely reluctant to fiddle with the (historically fragile) ordering
between the <cxxx> headers and <xxx.h> headers without understanding exactly
what's happening here, and why.=