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Date:      Sun, 15 Jan 2017 18:34:16 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-toolchain@FreeBSD.org
Subject:   [Bug 216117] clang 4.0.0 crashes trying to build lld on i386
Message-ID:  <bug-216117-29464-dobxn16LDp@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-216117-29464@https.bugs.freebsd.org/bugzilla/>
References:  <bug-216117-29464@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D216117

Dimitry Andric <dim@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dim@FreeBSD.org

--- Comment #4 from Dimitry Andric <dim@FreeBSD.org> ---
Hm, yes, I'm seeing this too, while building llvm38 even.  Something is rot=
ten,
but it's hard to figure out what.  For some reason, a cleanly built release=
_40
r292009 on universe12a.f.o works fine, but on my local system, it doesn't.

I'm trying valgrind to figure out what is going wrong, and it gives me:

=3D=3D1793=3D=3D Invalid read of size 8
=3D=3D1793=3D=3D    at 0x227C9BE: llvm::ValueHandleBase::AddToUseList() (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x29A3F2D:
llvm::AssumptionCache::AffectedValueCallbackVH::allUsesReplacedWith(llvm::V=
alue*)
(in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x227A884: llvm::ValueHandleBase::ValueIsRAUWd(llvm:=
:Value*,
llvm::Value*) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x227A504: llvm::Value::doRAUW(llvm::Value*, bool) (=
in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C9791E:
llvm::sroa::AllocaSliceRewriter::visitLoadInst(llvm::LoadInst&) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C880FD: llvm::sroa::AllocaSliceRewriter::visit((a=
nonymous
namespace)::Slice const*) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C86C9A: llvm::SROA::rewritePartition(llvm::Alloca=
Inst&,
llvm::sroa::AllocaSlices&, llvm::sroa::Partition&) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C88584: llvm::SROA::splitAlloca(llvm::AllocaInst&,
llvm::sroa::AllocaSlices&) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C89A1D: llvm::SROA::runOnAlloca(llvm::AllocaInst&=
) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C8B309: llvm::SROA::runImpl(llvm::Function&,
llvm::DominatorTree&, llvm::AssumptionCache&) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C9C239:
llvm::sroa::SROALegacyPass::runOnFunction(llvm::Function&) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x22B78D9: llvm::FPPassManager::runOnFunction(llvm::=
Function&)
(in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D  Address 0x5a5a5a5a5a5a5a62 is not stack'd, malloc'd or (r=
ecently)
free'd
=3D=3D1793=3D=3D
pid 1793 (memcheck-amd64-free): sigreturn rflags =3D 0x4
=3D=3D1793=3D=3D
=3D=3D1793=3D=3D Process terminating with default action of signal 10 (SIGB=
US): dumping
core
=3D=3D1793=3D=3D  Hardware error at address 0x40F7A495F
=3D=3D1793=3D=3D    at 0x227C9BE: llvm::ValueHandleBase::AddToUseList() (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x29A3F2D:
llvm::AssumptionCache::AffectedValueCallbackVH::allUsesReplacedWith(llvm::V=
alue*)
(in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x227A884: llvm::ValueHandleBase::ValueIsRAUWd(llvm:=
:Value*,
llvm::Value*) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x227A504: llvm::Value::doRAUW(llvm::Value*, bool) (=
in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C9791E:
llvm::sroa::AllocaSliceRewriter::visitLoadInst(llvm::LoadInst&) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C880FD: llvm::sroa::AllocaSliceRewriter::visit((a=
nonymous
namespace)::Slice const*) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C86C9A: llvm::SROA::rewritePartition(llvm::Alloca=
Inst&,
llvm::sroa::AllocaSlices&, llvm::sroa::Partition&) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C88584: llvm::SROA::splitAlloca(llvm::AllocaInst&,
llvm::sroa::AllocaSlices&) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C89A1D: llvm::SROA::runOnAlloca(llvm::AllocaInst&=
) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C8B309: llvm::SROA::runImpl(llvm::Function&,
llvm::DominatorTree&, llvm::AssumptionCache&) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x1C9C239:
llvm::sroa::SROALegacyPass::runOnFunction(llvm::Function&) (in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)
=3D=3D1793=3D=3D    by 0x22B78D9: llvm::FPPassManager::runOnFunction(llvm::=
Function&)
(in
/usr/obj/share/dim/src/freebsd/base/projects/clang400-import/usr.bin/clang/=
clang/clang.full)

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