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Mail Archives: cygwin/2024/02/20/00:41:32

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Date: Mon, 19 Feb 2024 21:41:05 -0800 (PST)
X-X-Sender: jeremyd AT resin DOT csoft DOT net
To: cygwin AT cygwin DOT com
Subject: binutils >= 2.41 makes .rsrc section read-only
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From: Jeremy Drake via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Jeremy Drake <cygwin AT jdrake DOT com>
Sender: "Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>

This is probably the right thing to do, but breaks building msys2-runtime
(read: cygwin) 3.3, because the _cygheap_start symbol is actually in the
.rsrc section and code very early attempts to memset _cygheap_start.
Couple of questions:

1) is there actually a good reason that _cygheap_start is in the .rsrc and
not the .cygheap section?

2) how could I make the .rsrc section read/write again?  I attempted to
use objcopy --set-section-flags .rsrc=contents,alloc,load,data a.dll b.dll
(or a.o b.o with .o files straight out of windres), but it does not seem
to actually clear the readonly flag.  I was able to set the 'code' flag,
so it is actually finding the right section.


See also https://github.com/msys2/msys2-runtime/issues/200

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