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 F3DB03858D20; Thu, 11 Apr 2024 21:45:20 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org F3DB03858D20
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1712871921;
	bh=mHUtwzunc0nFs3i2p0Nyj5xHWpq+LLOSeV6ynMBsWRU=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=lUUGsOy68uwepzJ1qCZ+AQ+P1dkkP1mAgc8+Ycx1pDXNgtg037nQeF9wEKJYbAd9X
	 oocoSD/RGJw6yq/kUVinNGklZ2thc7hjm3pApR/OVu8aMJNMMy7W5Qs73095IaFHZS
	 wg2mn/vXHqXOMq9wYuwhC4Ek7SipMjTlyA9OcAXA=
From: "rjones at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/114699] gcc-go -buildmode=c-shared doesn't use
 -Wl,-z,nodelete so libraries crash when dlclosed
Date: Thu, 11 Apr 2024 21:45:20 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: go
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: rjones at redhat dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: ian at airs dot com
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-114699-4-xyiMa6KYlw@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-114699-4@http.gcc.gnu.org/bugzilla/>
References: <bug-114699-4@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=3D114699

--- Comment #2 from Richard W.M. Jones <rjones at redhat dot com> ---
This was the stack trace of the crashing thread with gcc-go:

Thread 7 (Thread 0x7ff5c1af3a40 (LWP 2819340)):
#0  0x00007ff5c24d67cb in __GI_munmap () at
../sysdeps/unix/syscall-template.S:117
#1  0x00007ff5c24c916a in _dl_unmap_segments (l=3D0x563fc0eba080) at
./dl-unmap-segments.h:32
#2  _dl_unmap (map=3Dmap@entry=3D0x563fc0eba080) at ../sysdeps/x86_64/tlsde=
sc.c:31
#3  0x00007ff5c24b5ff5 in _dl_close_worker (map=3D<optimized out>,
map@entry=3D0x563fc0eb9a90, force=3Dforce@entry=3Dfalse) at dl-close.c:628
#4  0x00007ff5c24b663b in _dl_close (_map=3D0x563fc0eb9a90) at dl-close.c:7=
93
#5  0x00007ff5c24b5523 in __GI__dl_catch_exception
(exception=3Dexception@entry=3D0x7fffe1bbd500, operate=3D0x7ff5c24b6600 <_d=
l_close>,
args=3D0x563fc0eb9a90) at dl-catch.c:237
#6  0x00007ff5c24b5679 in _dl_catch_error (objname=3D0x7fffe1bbd568,
errstring=3D0x7fffe1bbd570, mallocedp=3D0x7fffe1bbd567, operate=3D<optimize=
d out>,
args=3D<optimized out>) at dl-catch.c:256
#7  0x00007ff5c20a4913 in _dlerror_run (operate=3D<optimized out>,
args=3D<optimized out>) at dlerror.c:138
#8  0x00007ff5c20a4656 in __dlclose (handle=3D<optimized out>) at dlclose.c=
:31
#9  0x0000563fb3951239 in backend_unload (b=3Db@entry=3D0x563fc0ebbf60,
unload=3D0x7ff5c1ae43b0) at /home/rjones/d/nbdkit/server/backend.c:154
#10 0x0000563fb39512bc in plugin_free (b=3D0x563fc0ebbf60) at
/home/rjones/d/nbdkit/server/plugins.c:64
#11 0x0000563fb394ed51 in main (argc=3D<optimized out>, argv=3D<optimized o=
ut>) at
/home/rjones/d/nbdkit/server/main.c:838=