[llvm-testresults] buildbot failure in smooshlab on llvm-gcc-powerpc-darwin9

Evan Cheng evan.cheng at apple.com
Fri Feb 26 09:41:49 PST 2010


On Feb 26, 2010, at 9:41 AM, Daniel Dunbar wrote:

> On Thu, Feb 25, 2010 at 11:26 PM, Evan Cheng <evan.cheng at apple.com> wrote:
>> I just did a successful self-host with my patch re-applied.
> 
> Just a reminder, its more than a self-host, the failure was in the
> second llvm-gcc build. You would need to do
>  llvm -> llvm-gcc -> llvm -> llvm-gcc
> to even possibly replicate the problem.

I know, I did this sequence 3 times already.

Evan

> 
> - Daniel
> 
>> Evan
>> 
>> On Feb 24, 2010, at 6:15 PM, Daniel Dunbar wrote:
>> 
>>> On Wed, Feb 24, 2010 at 5:50 PM, Stuart Hastings <stuart at apple.com> wrote:
>>>> 
>>>> On Feb 24, 2010, at 1:38 PM, Stuart Hastings wrote:
>>>> 
>>>> On Feb 24, 2010, at 12:15 PM, Daniel Dunbar wrote:
>>>> 
>>>> Just a reminder, this isn't a simple bootstrap, it is failing in the stage2
>>>> llm-gcc compile. My guess is the first LLVM-gcc is miscompiling the second
>>>> stage LLVM. That won't show up in a normal LLVM-gcc bootstrap.
>>>> 
>>>> I have an llvmgcc bootstrap of r97011 running right now on smoosh-14.
>>>> 
>>>> A straightforward FSF-style bootstrap of llvm-gcc at revision 97011 worked
>>>> O.K.  It looks like I'll need to duplicate the build-install-build procedure
>>>> used by the buildbot scripts.
>>>> Daniel, is it feasible to run the buildbot script by hand in a directory of
>>>> my own choosing?  If not, I think I can duplicate it by scanning the logs...
>>>> stuart
>>> 
>>> No, but its pretty straightforward, just do another configure and make
>>> of llvm using the built llvm-gcc, then another llvm-gcc with the
>>> second llvm and using the first llvm-gcc.
>>> 
>>> And yes, you can see what it is doing by checking the first two lines
>>> of the logs, the first line is the command that is run, the second is
>>> the directory it ran it in.
>>> 
>>> - Daniel
>>> 
>>>> 
>>>> stuart
>>>> 
>>>> 
>>>> - Daniel
>>>> 
>>>> 
>>>> On Feb 24, 2010, at 11:12 AM, Evan Cheng <evan.cheng at apple.com> wrote:
>>>> 
>>>> Well, I can't reproduce on my machine. My ppc machine self-hosted fine last
>>>> night. I think there is something else going on. Stuart, Dale, can one of
>>>> you guys reproduce this look at this a bit? Is it llvmCore being miscompiled
>>>> or llvmgcc42? Please get me a test case if that's possible. Thanks.
>>>> 
>>>> Dan, can you audit my patch carefully? Thanks.
>>>> 
>>>> Evan
>>>> 
>>>> On Feb 24, 2010, at 10:55 AM, Dale Johannesen wrote:
>>>> 
>>>> 
>>>> On Feb 24, 2010, at 10:49 AMPST, Bob Wilson wrote:
>>>> 
>>>> The ppc buildbot just turned green (with 97011 reverted).
>>>> 
>>>> Yep.  I'm satisfied that was it.  Thanks Daniel.
>>>> 
>>>> On Feb 24, 2010, at 10:43 AM, Dale Johannesen wrote:
>>>> 
>>>> 
>>>> On Feb 24, 2010, at 9:34 AMPST, Evan Cheng wrote:
>>>> 
>>>> On Feb 24, 2010, at 9:02 AM, Daniel Dunbar <daniel_dunbar at apple.com> wrote:
>>>> 
>>>> On Feb 24, 2010, at 1:47 AM, Evan Cheng wrote:
>>>> 
>>>> I saw this on x86 last night. Then it disappeared. I am moving tomorrow so I
>>>> can't deal with it. Dale, could you help? Thanks.
>>>> 
>>>> Ok, I'm going to try another speculative revert of r97011 then.
>>>> 
>>>> You are not understanding me. I saw this assertion on x86 the night before.
>>>> It was well before I commit the patch.
>>>> 
>>>> You may have, but the x86 buildbots are not failing.  The ppc buildbots
>>>> (both) are failing consistently, and logs indicate the breakage was between
>>>> 97006 and 97012.   I suppose it could be nondeterminism but the observed
>>>> behavior is quite deterministic.  I'll go talk to Stuart...
>>>> 
>>>> Someone should actually debug the failure.
>>>> 
>>>> Evan
>>>> 
>>>> 
>>>> - Daniel
>>>> 
>>>> Evan
>>>> 
>>>> On Feb 24, 2010, at 12:44 AM, Daniel Dunbar <daniel_dunbar at apple.com> wrote:
>>>> 
>>>> My revert of r97010 didn't work. Evan, 97011 seems the next obvious guess,
>>>> can you take a look?
>>>> 
>>>> - Daniel
>>>> 
>>>> On Feb 23, 2010, at 10:45 PM, Daniel Dunbar wrote:
>>>> 
>>>> 
>>>> On Feb 23, 2010, at 10:03 PM, Daniel Dunbar wrote:
>>>> 
>>>> Evan, Jim, Bob, anyone have a guess what is going on here? I'm
>>>> 
>>>> guessing Bob's patch is most likely since it touches an IR pass...
>>>> 
>>>> I'll probably pull that in a bit if no one replies.
>>>> 
>>>> I stashed off a .bc file, but I can't reproduce with it. I'm assuming this
>>>> is most likely a miscompile of llvm stage1? Here is the info:
>>>> 
>>>> --
>>>> 
>>>> smoosh-14:libcpp buildslave$
>>>> /Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm-gcc.obj.2/./prev-gcc/xgcc
>>>> -B/Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm-gcc.obj.2/./prev-gcc/
>>>> -B/Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm-gcc.install.2/powerpc-apple-darwin9/bin/
>>>>  -I../../llvm-gcc.src/libcpp -I. -I../../llvm-gcc.src/libcpp/../include
>>>> -I./../intl -I../../llvm-gcc.src/libcpp/include -DENABLE_LLVM -g -O2
>>>> -mdynamic-no-pic -W -Wall -Wwrite-strings -Wstrict-prototypes
>>>> -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute
>>>> -pedantic -Wno-long-long  -I../../llvm-gcc.src/libcpp -I.
>>>> -I../../llvm-gcc.src/libcpp/../include -I./../intl
>>>> -I../../llvm-gcc.src/libcpp/include -DENABLE_LLVM -c -o init.o -MT init.o
>>>> -MMD -MP -MF .deps/init.Po ../../llvm-gcc.src/libcpp/init.c
>>>> 
>>>> Assertion failed: (i < NumOperands && "getOperand() out of range!"),
>>>> function getOperand, file
>>>> /Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm.src/include/llvm/User.h,
>>>> line 104.
>>>> 
>>>> ../../llvm-gcc.src/libcpp/init.c:666: internal compiler error: Abort trap
>>>> 
>>>> Please submit a full bug report,
>>>> 
>>>> with preprocessed source if appropriate.
>>>> 
>>>> See <URL:http://llvm.org/bugs/> for instructions.
>>>> 
>>>> smoosh-14:libcpp buildslave$
>>>> /Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm-gcc.obj.2/./prev-gcc/xgcc
>>>> -B/Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm-gcc.obj.2/./prev-gcc/
>>>> -B/Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm-gcc.install.2/powerpc-apple-darwin9/bin/
>>>>  -I../../llvm-gcc.src/libcpp -I. -I../../llvm-gcc.src/libcpp/../include
>>>> -I./../intl -I../../llvm-gcc.src/libcpp/include -DENABLE_LLVM -g -O2
>>>> -mdynamic-no-pic -W -Wall -Wwrite-strings -Wstrict-prototypes
>>>> -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute
>>>> -pedantic -Wno-long-long  -I../../llvm-gcc.src/libcpp -I.
>>>> -I../../llvm-gcc.src/libcpp/../include -I./../intl
>>>> -I../../llvm-gcc.src/libcpp/include -DENABLE_LLVM -c -o init.o -MT init.o
>>>> -MMD -MP -MF .deps/init.Po ../../llvm-gcc.src/libcpp/init.c -emit-llvm -o
>>>> /tmp/t.bc
>>>> 
>>>> (gdb) r
>>>> 
>>>> Starting program:
>>>> /Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm-gcc.obj.2/prev-gcc/cc1
>>>> -quiet -I../../llvm-gcc.src/libcpp -I.
>>>> -I../../llvm-gcc.src/libcpp/../include -I./../intl
>>>> -I../../llvm-gcc.src/libcpp/include -I../../llvm-gcc.src/libcpp -I.
>>>> -I../../llvm-gcc.src/libcpp/../include -I./../intl
>>>> -I../../llvm-gcc.src/libcpp/include -iprefix
>>>> /Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm-gcc.obj.2/prev-gcc/../lib/gcc/powerpc-apple-darwin9/4.2.1/
>>>> -isystem
>>>> /Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm-gcc.obj.2/./prev-gcc/include
>>>> -MMD init.d -MF .deps/init.Po -MP -MT init.o -MQ init.o -D__DYNAMIC__
>>>> -DENABLE_LLVM -DENABLE_LLVM ../../llvm-gcc.src/libcpp/init.c
>>>> -feliminate-unused-debug-symbols -quiet -dumpbase init.c
>>>> -mmacosx-version-min=10.5.8 -mdynamic-no-pic -auxbase-strip init.o -g -O2 -W
>>>> -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes
>>>> -Wold-style-definition -Wmissing-format-attribute -pedantic -Wno-long-long
>>>> -o /var/tmp//cc9W2r3q.s
>>>> 
>>>> Reading symbols for shared libraries ++++.. done
>>>> 
>>>> Assertion failed: (i < NumOperands && "getOperand() out of range!"),
>>>> function getOperand, file
>>>> /Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm.src/include/llvm/User.h,
>>>> line 104.
>>>> 
>>>> Program received signal SIGABRT, Aborted.
>>>> 
>>>> 0x90b76b50 in __kill ()
>>>> 
>>>> (gdb) bt
>>>> 
>>>> #0  0x90b76b50 in __kill ()
>>>> 
>>>> #1  0x90c11c00 in abort ()
>>>> 
>>>> #2  0x90c04c10 in __assert_rtn ()
>>>> 
>>>> #3  0x00ea949c in llvm::InstCombiner::FoldGEPICmp ()
>>>> 
>>>> #4  0x00eb1260 in llvm::InstCombiner::visitICmpInst ()
>>>> 
>>>> #5  0x00ee5158 in llvm::InstVisitor<llvm::InstCombiner,
>>>> llvm::Instruction*>::visit ()
>>>> 
>>>> #6  0x00edf0c8 in llvm::InstCombiner::DoOneIteration ()
>>>> 
>>>> #7  0x00ed9bc8 in llvm::InstCombiner::runOnFunction ()
>>>> 
>>>> #8  0x010c5400 in llvm::FPPassManager::runOnFunction ()
>>>> 
>>>> #9  0x00f2a190 in (anonymous namespace)::CGPassManager::runOnModule ()
>>>> 
>>>> #10 0x010c4f58 in llvm::MPPassManager::runOnModule ()
>>>> 
>>>> #11 0x010c67c0 in llvm::PassManagerImpl::run ()
>>>> 
>>>> #12 0x010c6894 in llvm::PassManager::run ()
>>>> 
>>>> #13 0x0087d6f4 in llvm_asm_file_end ()
>>>> 
>>>> #14 0x0079eeec in compile_file ()
>>>> 
>>>> #15 0x007a1f18 in do_compile ()
>>>> 
>>>> #16 0x007a1fe0 in toplev_main ()
>>>> 
>>>> #17 0x00122ffc in main ()
>>>> 
>>>> --
>>>> 
>>>> <t.bc>
>>>> 
>>>> - Daniel
>>>> 
>>>> 
>>>> - Daniel
>>>> 
>>>> On Tue, Feb 23, 2010 at 6:48 PM,  <daniel_dunbar at apple.com> wrote:
>>>> 
>>>> The Buildbot has detected a new failure of llvm-gcc-powerpc-darwin9 on
>>>> smooshlab.
>>>> 
>>>> Full details are available at:
>>>> 
>>>> http://smooshlab.apple.com:8010/builders/llvm-gcc-powerpc-darwin9/builds/979
>>>> 
>>>> Buildbot URL: http://smooshlab.apple.com:8010/
>>>> 
>>>> Buildslave for this Build: smoosh-14.apple.com
>>>> 
>>>> Build Reason:
>>>> 
>>>> Build Source Stamp: 97012
>>>> 
>>>> Blamelist: bwilson,evancheng,fjahanian,grosbach,johannes
>>>> 
>>>> BUILD FAILED: failed test.llvm.stage2 compile.llvm-gcc.stage2
>>>> 
>>>> sincerely,
>>>> 
>>>> -The Buildbot
>>>> 
>>>> 
>>>> ================================================================================
>>>> 
>>>> CHANGES:
>>>> 
>>>> Files:
>>>> 
>>>> SingleSource/Benchmarks/Misc/Makefile
>>>> 
>>>> SingleSource/UnitTests/Makefile
>>>> 
>>>> At: Tue 23 Feb 2010 17:25:31
>>>> 
>>>> Changed By: johannes
>>>> 
>>>> Comments: Disable some tests on PPC Darwin that are never going to work.
>>>> 
>>>> Properties:
>>>> 
>>>> 
>>>> 
>>>> 
>>>> Files:
>>>> 
>>>> lib/Frontend/RewriteObjC.cpp
>>>> 
>>>> test/Rewriter/rewrite-block-pointer.mm
>>>> 
>>>> At: Tue 23 Feb 2010 17:30:31
>>>> 
>>>> Changed By: fjahanian
>>>> 
>>>> Comments: Fix rewriting of a method when return type is
>>>> 
>>>> a block pointer type. Fixes radar 7682149.
>>>> 
>>>> Properties:
>>>> 
>>>> 
>>>> 
>>>> 
>>>> File: test/Rewriter/rewrite-block-pointer.mm
>>>> 
>>>> At: Tue 23 Feb 2010 17:40:33
>>>> 
>>>> Changed By: fjahanian
>>>> 
>>>> Comments: Correct radar no.
>>>> 
>>>> Properties:
>>>> 
>>>> 
>>>> 
>>>> 
>>>> Files:
>>>> 
>>>> include/llvm/Analysis/PHITransAddr.h
>>>> 
>>>> lib/Analysis/MemoryDependenceAnalysis.cpp
>>>> 
>>>> lib/Analysis/PHITransAddr.cpp
>>>> 
>>>> lib/Transforms/Scalar/GVN.cpp
>>>> 
>>>> At: Tue 23 Feb 2010 17:40:33
>>>> 
>>>> Changed By: bwilson
>>>> 
>>>> Comments: Add an argument to PHITranslateValue to specify the DominatorTree.
>>>>  If this
>>>> 
>>>> argument is non-null, pass it along to PHITranslateSubExpr so that it can
>>>> 
>>>> prefer using existing values that dominate the PredBB, instead of just
>>>> 
>>>> blindly picking the first equivalent value that it finds on a uselist.
>>>> 
>>>> Also when the DominatorTree is specified, have PHITranslateValue filter
>>>> 
>>>> out any result that does not dominate the PredBB.  This is basically just
>>>> 
>>>> refactoring the check that used to be in GetAvailablePHITranslatedSubExpr
>>>> 
>>>> and also in GVN.
>>>> 
>>>> Despite my initial expectations, this change does not affect the results
>>>> 
>>>> of GVN for any testcases that I could find, but it should help compile time.
>>>> 
>>>> Before this change, if PHITranslateSubExpr picked a value that does not
>>>> 
>>>> dominate, PHITranslateWithInsertion would then insert a new value, which GVN
>>>> 
>>>> would later determine to be redundant and would replace.  By picking a good
>>>> 
>>>> value to begin with, we save GVN the extra work of inserting and then
>>>> 
>>>> replacing a new value.
>>>> 
>>>> Properties:
>>>> 
>>>> 
>>>> 
>>>> 
>>>> Files:
>>>> 
>>>> lib/CodeGen/SelectionDAG/DAGCombiner.cpp
>>>> 
>>>> lib/CodeGen/SelectionDAG/TargetLowering.cpp
>>>> 
>>>> lib/Target/X86/X86ISelLowering.cpp
>>>> 
>>>> test/CodeGen/X86/2010-02-23-DAGCombineBug.ll
>>>> 
>>>> test/CodeGen/X86/critical-edge-split.ll
>>>> 
>>>> test/CodeGen/X86/ins_subreg_coalesce-3.ll
>>>> 
>>>> test/CodeGen/X86/trunc-to-bool.ll
>>>> 
>>>> test/CodeGen/X86/xor-icmp.ll
>>>> 
>>>> At: Tue 23 Feb 2010 17:45:32
>>>> 
>>>> Changed By: evancheng
>>>> 
>>>> Comments: Re-apply 96540 and 96556 with fixes.Properties:
>>>> 
>>>> 
>>>> 
>>>> 
>>>> Files:
>>>> 
>>>> lib/Target/ARM/ARMISelLowering.cpp
>>>> 
>>>> test/CodeGen/Thumb2/ldr-str-imm12.ll
>>>> 
>>>> At: Tue 23 Feb 2010 17:45:32
>>>> 
>>>> Changed By: grosbach
>>>> 
>>>> Comments: LowerCall() should always do getCopyFromReg() to reference the
>>>> stack pointer.
>>>> 
>>>> Machine instruction selection is much happier when operands are in virtual
>>>> 
>>>> registers.Properties:
>>>> 
>>>> 
>>>> 
>>>> 
>>>> LOGS:
>>>> 
>>>> Last 10 lines of 'stdio':
>>>> 
>>>> ********************
>>>> 
>>>> Failing Tests (1):
>>>> 
>>>>  LLVM :: FrontendC/2003-08-23-LocalUnionTest.c
>>>> 
>>>> Expected Passes    : 4991
>>>> 
>>>> Expected Failures  : 38
>>>> 
>>>> Unsupported Tests  : 64
>>>> 
>>>> Unexpected Failures: 1
>>>> 
>>>> make[1]: *** [check-local-lit] Error 1
>>>> 
>>>> make: *** [check-lit] Error 2
>>>> 
>>>> Last 10 lines of 'fail':
>>>> 
>>>> LLVM :: FrontendC/2003-08-23-LocalUnionTest.c
>>>> 
>>>> Last 10 lines of 'xfail':
>>>> 
>>>> LLVM :: LLVMC/MultiplePluginPriorities.td
>>>> 
>>>> LLVM :: LLVMC/OutputSuffixHook.td
>>>> 
>>>> LLVM :: MC/AsmParser/directive_lsym.s
>>>> 
>>>> LLVM :: MC/AsmParser/exprs-invalid.s
>>>> 
>>>> LLVM :: Transforms/GVN/rle-no-phi-translate.ll
>>>> 
>>>> LLVM :: Transforms/GlobalOpt/2009-03-03-dbg.ll
>>>> 
>>>> LLVM :: Transforms/GlobalOpt/2009-03-05-dbg.ll
>>>> 
>>>> LLVM :: Transforms/IndVarSimplify/loop_evaluate_6.ll
>>>> 
>>>> LLVM :: Transforms/TailCallElim/nocapture.ll
>>>> 
>>>> LLVM :: Transforms/TailDup/2008-06-11-AvoidDupLoopHeader.ll
>>>> 
>>>> Last 10 lines of 'unsupported':
>>>> 
>>>> LLVM :: FrontendObjC/2009-04-27-bitfield-vs-ivar.m
>>>> 
>>>> LLVM :: FrontendObjC/2009-04-28-bitfield-vs-vbc.m
>>>> 
>>>> LLVM :: FrontendObjC/2009-08-05-utf16.m
>>>> 
>>>> LLVM :: FrontendObjC/2009-08-17-DebugInfo.m
>>>> 
>>>> LLVM :: FrontendObjC/2009-11-30-Objc-ID.m
>>>> 
>>>> LLVM :: FrontendObjC/2010-02-01-utf16-with-null.m
>>>> 
>>>> LLVM :: FrontendObjC/2010-02-11-fwritable-stringsBug.m
>>>> 
>>>> LLVM :: FrontendObjC/2010-02-23-DbgInheritance.m
>>>> 
>>>> LLVM :: LLVMC/ObjC++/hello.mm
>>>> 
>>>> LLVM :: LLVMC/ObjC/hello.m
>>>> 
>>>> Last 10 lines of '2003-08-23-localuniontest.c':
>>>> 
>>>> --
>>>> 
>>>> Command Output (stderr):
>>>> 
>>>> --
>>>> 
>>>> /Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm.src/test/FrontendC/2003-08-23-LocalUnionTest.c:
>>>> In function 'test':
>>>> 
>>>> /Users/buildslave/zorg/buildbot/smooshlab/slave/build.llvm-gcc-powerpc-darwin9/llvm.src/test/FrontendC/2003-08-23-LocalUnionTest.c:9:
>>>> error: redefinition of 'union foo'
>>>> 
>>>> --
>>>> 
>>>> ********************
>>>> 
>>>> 
>>>> Last 10 lines of 'stdio':
>>>> 
>>>> configure: creating ./config.status
>>>> 
>>>> config.status: creating Makefile
>>>> 
>>>> config.status: creating gccbug
>>>> 
>>>> config.status: creating mklibgcc
>>>> 
>>>> config.status: creating libada-mk
>>>> 
>>>> config.status: creating ada/Makefile
>>>> 
>>>> config.status: creating auto-host.h
>>>> 
>>>> config.status: executing default commands
>>>> 
>>>> make[1]: *** [stage2-bubble] Error 2
>>>> 
>>>> make: *** [all] Error 2
>>>> 
>>>> Last 10 lines of 'warnings':
>>>> 
>>>> ../../llvm-gcc.src/gcc/config/rs6000/altivec.md:1781: warning: operand 3
>>>> missing mode?
>>>> 
>>>> ../../llvm-gcc.src/gcc/config/rs6000/altivec.md:1794: warning: operand 3
>>>> missing mode?
>>>> 
>>>> ../../llvm-gcc.src/gcc/config/rs6000/altivec.md:1807: warning: operand 3
>>>> missing mode?
>>>> 
>>>> ../../llvm-gcc.src/gcc/config/rs6000/altivec.md:1882: warning: operand 1
>>>> missing mode?
>>>> 
>>>> ../../llvm-gcc.src/gcc/config/rs6000/altivec.md:1889: warning: operand 1
>>>> missing mode?
>>>> 
>>>> ../../llvm-gcc.src/gcc/config/rs6000/altivec.md:2195: warning: destination
>>>> missing a mode?
>>>> 
>>>> ../../llvm-gcc.src/gcc/config/rs6000/altivec.md:2195: warning: operand 0
>>>> missing mode?
>>>> 
>>>> ../../llvm-gcc.src/gcc/sched-vis.c:628: warning: no previous prototype for
>>>> 'print_insn'
>>>> 
>>>> ../../llvm-gcc.src/gcc/libgcc2.c:412: warning: control reaches end of
>>>> non-void function
>>>> 
>>>> ../../llvm-gcc.src/gcc/libgcc2.c:2045: warning: 'noreturn' function does
>>>> return
>>>> 
>>>> _______________________________________________
>>>> 
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>>>> 
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>>>> 
>>>> 
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