From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-484157-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 85418 invoked by alias); 21 Apr 2015 10:32:51 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Received: (qmail 85351 invoked by uid 48); 21 Apr 2015 10:32:46 -0000
From: "steven at uplinklabs dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/65828] [LTO] ICE in streamer_get_builtin_tree, at tree-streamer-in.c:1127
Date: Tue, 21 Apr 2015 10:32:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: lto
X-Bugzilla-Version: 4.9.2
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: steven at uplinklabs dot net
X-Bugzilla-Status: UNCONFIRMED
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-65828-4-lXMUHDMZnI@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-65828-4@http.gcc.gnu.org/bugzilla/>
References: <bug-65828-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2015-04/txt/msg01709.txt.bz2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65828

--- Comment #2 from Steven Noonan <steven at uplinklabs dot net> ---
I just noticed that libtool appears to be stripping some of the arguments in
LDFLAGS when invoking GCC:

/bin/sh ../libtool  --tag=CC   --mode=link gcc -flto -Wall -Wstrict-prototypes
-Werror=declaration-after-statement -Werror=missing-prototypes
-Werror=implicit-function-declaration -Werror=pointer-arith -Werror=init-self
-Werror=format=2 -Werror=missing-include-dirs -fvisibility=hidden -O2
-fsanitize=undefined -Wl,-Bsymbolic-functions  -version-info 4400:0:4400
-export-dynamic  -O2 -fsanitize=undefined -o libglib-2.0.la -rpath
/usr/local/lib [[.lo files]] libcharset/libcharset.la pcre/libpcre.la 
-lpthread

libtool: link: gcc -flto -shared  -fPIC -DPIC  [[.o files]] 
-Wl,--whole-archive libcharset/.libs/libcharset.a pcre/.libs/libpcre.a
-Wl,--no-whole-archive  -lpthread  -flto -O2 -Wl,-Bsymbolic-functions -O2  
-Wl,-soname -Wl,libglib-2.0.so.0 -o .libs/libglib-2.0.so.0.4400.0

In particular it dropped the -fsanitize=undefined flag.

If I invoke the libtool-generated GCC command line with '-fsanitize=undefined'
added then there's no ICE.

$ gcc -flto -shared  -fPIC -DPIC  [[.o files]]  -Wl,--whole-archive
libcharset/.libs/libcharset.a pcre/.libs/libpcre.a -Wl,--no-whole-archive 
-lpthread  -flto -O2 -Wl,-Bsymbolic-functions -O2   -Wl,-soname
-Wl,libglib-2.0.so.0 -o .libs/libglib-2.0.so.0.4400.0 -fsanitize=undefined
$ ls -cahl .libs/libglib-2.0.so.0.4400.0
-rwxr-xr-x 1 snoonan snoonan 4.3M Apr 21 03:31 .libs/libglib-2.0.so.0.4400.0

Hmm.