[llvm-bugs] [Bug 42003] New: Crash in cc1_main with -flto

Fri May 24 02:03:28 PDT 2019

https://bugs.llvm.org/show_bug.cgi?id=42003

            Bug ID: 42003
           Summary: Crash in cc1_main with -flto
           Product: new-bugs
           Version: 8.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: dilyan.palauzov at aegee.org
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

Created attachment 22007
  --> https://bugs.llvm.org/attachment.cgi?id=22007&action=edit
Test case

I call:

CC=clang CXX=clang++ CFLAGS=-flto -O3 CXXFLAGS=-flto -O3 LDFLAGS=-fuse-ld=bfd
-flto -Wl,-O1 ./configure

with llvm 8.0.  I prints:

checking whether we are cross compiling... configure: error: in
`/git/aegee-milter':
configure: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details

config.log contains:

configure:3685: checking whether we are cross compiling
configure:3693: clang -o conftest -flto -O3  -fuse-ld=bfd -flto -Wl,-O1
conftest.c  >&5
clang-8: /src/llvm/llvm-8.0.0.src/lib/IR/User.cpp:41: void
llvm::User::allocHungoffUses(unsigned int, bool): Assertion `HasHungOffUses &&
"alloc m
ust have hung off uses"' failed.
Stack dump:
0.      Program arguments: /usr/local/bin/clang-8 -cc1 -triple
x86_64-unknown-linux-gnu -emit-llvm-bc -flto -flto-unit -disable-free
-main-file-na
me conftest.c -mrelocation-model static -mthread-model posix -fmath-errno
-masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -ta
rget-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb
-momit-leaf-frame-pointer -resource-dir /usr/local/lib/clang/8.0.0
-internal-isystem /usr/
local/include -internal-isystem /usr/local/lib/clang/8.0.0/include
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -
fdebug-compilation-dir /git/aegee-milter -ferror-limit 19 -fmessage-length 0
-fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vector
ize-slp -o /tmp/conftest-950cda.o -x c conftest.c -faddrsig 
1.      <eof> parser at end of file
2.      Per-module optimization passes
3.      Running pass 'CallGraph Pass Manager' on module 'conftest.c'.
4.      Running pass 'Memory SSA' on function '@main'
 #0 0x00000000027d850f PrintStackTraceSignalHandler(void*)
(/usr/local/bin/clang-8+0x27d850f)
 #1 0x00000000026cbd94 SignalHandler(int) (/usr/local/bin/clang-8+0x26cbd94)
 #2 0x00007fdacc96a300 __restore_rt (/lib64/libpthread.so.0+0x12300)
 #3 0x00007fdacb6dcbea __GI_raise
/src/glibc-2.29/signal/../sysdeps/unix/sysv/linux/internal-signals.h:84:10
 #4 0x00007fdacb6c8524 __GI_abort /src/glibc-2.29/stdlib/abort.c:81:7
 #5 0x00007fdacb6c840f get_sysdep_segment_value
/src/glibc-2.29/intl/loadmsgcat.c:509:8
 #6 0x00007fdacb6c840f _nl_load_domain.cold.0
/src/glibc-2.29/intl/loadmsgcat.c:970:34
 #7 0x00007fdacb6d5582 (/lib64/libc.so.6+0x2f582)
 #8 0x000000000094e168 llvm::User::allocHungoffUses(unsigned int, bool)
(.constprop.14058) (/usr/local/bin/clang-8+0x94e168)
 #9 0x0000000000e0d77b llvm::MemorySSA::createMemoryPhi(llvm::BasicBlock*)
(/usr/local/bin/clang-8+0xe0d77b)
#10 0x0000000000e16c1f
llvm::MemorySSA::placePHINodes(llvm::SmallPtrSetImpl<llvm::BasicBlock*> const&)
(/usr/local/bin/clang-8+0xe16c1f)
#11 0x0000000000e79b85 llvm::MemorySSA::buildMemorySSA()
(/usr/local/bin/clang-8+0xe79b85)
#12 0x0000000000e7a267
llvm::MemorySSAWrapperPass::runOnFunction(llvm::Function&)
(/usr/local/bin/clang-8+0xe7a267)
#13 0x0000000002b08260 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/local/bin/clang-8+0x2b08260)
#14 0x000000000309e8a0 (anonymous
namespace)::CGPassManager::runOnModule(llvm::Module&)
(/usr/local/bin/clang-8+0x309e8a0)
#15 0x0000000002b07715 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/bin/clang-8+0x2b07715)
#16 0x000000000266fe61 clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang:
:TargetOptions const&, clang::LangOptions const&, llvm::DataLayout const&,
llvm::Module*, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_s
tream, std::default_delete<llvm::raw_pwrite_stream> >)
(/usr/local/bin/clang-8+0x266fe61)
#17 0x0000000001d090b1
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/usr/local/bin/clang-8+0x1d090b1)
#18 0x00000000018ab9a2 clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/bin/clang-8+0x18ab9a2)
#19 0x0000000001d269f8 clang::CodeGenAction::ExecuteAction()
(/usr/local/bin/clang-8+0x1d269f8)
#20 0x000000000212dab6 clang::FrontendAction::Execute()
(/usr/local/bin/clang-8+0x212dab6)
#21 0x00000000021e1d5e
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/bin/clang-8+0x21e1d5e)
#22 0x00000000021e28d3
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/bin/clang-8+0x21e28d3)
#23 0x0000000003c4c2b8 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/bin/clang-8+0x3c4c2b8)
#24 0x00000000008a94f9 main (/usr/local/bin/clang-8+0x8a94f9)
#25 0x00007fdacb6c9b5b __libc_start_main
/src/glibc-2.29/csu/../csu/libc-start.c:308:16
#26 0x00000000008a9fea _start
/src/glibc-2.29/csu/../sysdeps/x86_64/start.S:122:0
clang-8: error: unable to execute command: Aborted (core dumped)
clang-8: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 8.0.0 (tags/RELEASE_800/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
clang-8: note: diagnostic msg: PLEASE submit a bug report to
https://bugs.llvm.org/ and include the crash backtrace, preprocessed source,
and asso
ciated run script.
clang-8: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-8: note: diagnostic msg: /tmp/conftest-86feae.c
clang-8: note: diagnostic msg: /tmp/conftest-86feae.sh
clang-8: note: diagnostic msg: 

********************
configure:3697: $? = 254
configure:3704: ./conftest
./configure: line 3706: ./conftest: No such file or directory
configure:3708: $? = 127
configure:3715: error: in `/git/aegee-milter':
configure:3717: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details

/tmp/conftest-86feae.c and /tmp/conftest-86feae.sh are attached.

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