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Date:      Sun, 01 Nov 2020 17:10:28 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 250783] ld segmentation fault
Message-ID:  <bug-250783-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D250783

            Bug ID: 250783
           Summary: ld segmentation fault
           Product: Base System
           Version: 12.1-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: nijave@gmail.com
 Attachment #219280 text/plain
         mime type:

Created attachment 219280
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D219280&action=
=3Dedit
Log from failed build

ld segfaults when trying to build `maturin` Python package

```
curl -LO
https://files.pythonhosted.org/packages/35/e1/d6a9c170f925fb8f4f97d0bed27e2=
c43a5ba73d7f88a10ed63cd3f8f7968/maturin-0.8.3.tar.gz
mkdir maturin
cd mautrin
tar xf ../maturin-0.8.3.tar.gz
cargo rustc --bin maturin --manifest-path Cargo.toml -- -C link-arg=3D-s
```

```
(gdb) bt
#0  0x0000000000f99607 in operator() ()
    at /usr/src/contrib/llvm/tools/lld/ELF/MarkLive.cpp:207
#1  callback_fn<(lambda at
/usr/src/contrib/llvm/tools/lld/ELF/MarkLive.cpp:194:18)>(void) () at
/usr/src/contrib/llvm/include/llvm/ADT/STLExtras.h:126
#2  0x0000000000f96363 in
forEachSuccessor<llvm::object::ELFType<llvm::support::little, true> > () at
/usr/src/contrib/llvm/tools/lld/ELF/MarkLive.cpp:97
#3  doGcSections<llvm::object::ELFType<llvm::support::little, true> > ()
    at /usr/src/contrib/llvm/tools/lld/ELF/MarkLive.cpp:264
#4  markLive<llvm::object::ELFType<llvm::support::little, true> > ()
    at /usr/src/contrib/llvm/tools/lld/ELF/MarkLive.cpp:312
#5  0x0000000000f28de6 in link<llvm::object::ELFType<llvm::support::little,
true> > () at /usr/src/contrib/llvm/tools/lld/ELF/Driver.cpp:1636
#6  0x0000000000f1ed26 in main ()
    at /usr/src/contrib/llvm/tools/lld/ELF/Driver.cpp:443
#7  0x0000000000f1d619 in link ()
    at /usr/src/contrib/llvm/tools/lld/ELF/Driver.cpp:103
#8  0x000000000106792b in main ()
    at /usr/src/contrib/llvm/tools/lld/tools/lld/lld.cpp:129
```

I'm not very well-versed in C++/rust but if I naively replace /usr/bin/ld w=
ith
/usr/local/bin/ld from gcc9 the build seems to work
I'm not sure if a core dump is helpful here,
https://files.nickv.me/maturin-ld.lld.core.xz

This is on a fresh VM from
http://ftp.freebsd.org/pub/FreeBSD/snapshots/VM-IMAGES/ (with git, gcc9, ru=
st,
and python38)

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