[llvm-bugs] [Bug 37764] New: clang crashes with "-fexperimental-new-pass-manager": Assertion `std::any_of(GraphTraits<BlockT >::child_begin(BB), GraphTraits<BlockT >::child_end(BB), [&](BlockT *B) { return contains(B); }) && "Loop block has no in-loop successors!"' failed.

Sun Jun 10 13:16:40 PDT 2018

https://bugs.llvm.org/show_bug.cgi?id=37764

            Bug ID: 37764
           Summary: clang crashes with "-fexperimental-new-pass-manager":
                    Assertion `std::any_of(GraphTraits<BlockT
                    *>::child_begin(BB), GraphTraits<BlockT
                    *>::child_end(BB), [&](BlockT *B) { return
                    contains(B); }) && "Loop block has no in-loop
                    successors!"' failed.
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: helloqirun at gmail.com
                CC: llvm-bugs at lists.llvm.org

It happens with flags "-fexperimental-new-pass-manager -m32 -O1".

$ clang-trunk -v
clang version 7.0.0 (trunk 334360)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin

$ clang-trunk  -fexperimental-new-pass-manager -m32 -O1 abc.c
abc.c:17:9: warning: implicit declaration of function 'fn2' is invalid in C99
[-Wimplicit-function-declaration]
        fn2();
        ^
abc.c:27:1: warning: control may reach end of non-void function [-Wreturn-type]
}
^
clang-7: /home/absozero/trunk/llvm/include/llvm/Analysis/LoopInfoImpl.h:251:
void llvm::LoopBase<llvm::BasicBlock, llvm::Loop>::verifyLoop() const [BlockT =
llvm::BasicBlock, LoopT = llvm::Loop]: Assertion
`std::any_of(GraphTraits<BlockT *>::child_begin(BB), GraphTraits<BlockT
*>::child_end(BB), [&](BlockT *B) { return contains(B); }) && "Loop block has
no in-loop successors!"' failed.
Stack dump:
0.      Program arguments: /home/absozero/trunk/root-clang/bin/clang-7 -cc1
-triple i386-unknown-linux-gnu -emit-obj -disable-free -main-file-name abc.c
-mrelocation-model static -mthread-model posix -fmath-errno -masm-verbose
-mconstructor-aliases -fuse-init-array -target-cpu pentium4 -dwarf-column-info
-debugger-tuning=gdb -momit-leaf-frame-pointer -resource-dir
/home/absozero/trunk/root-clang/lib/clang/7.0.0 -internal-isystem
/usr/local/include -internal-isystem
/home/absozero/trunk/root-clang/lib/clang/7.0.0/include
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O1
-fdebug-compilation-dir /home/absozero/projects/reduction/crash -ferror-limit
19 -fmessage-length 156 -fexperimental-new-pass-manager -fobjc-runtime=gcc
-fdiagnostics-show-option -fcolor-diagnostics -o /tmp/abc-145b44.o -x c abc.c
1.      <eof> parser at end of file
2.      Optimizer
#0 0x0000000002075c34 PrintStackTraceSignalHandler(void*)
(/home/absozero/trunk/root-clang/bin/clang-7+0x2075c34)
#1 0x0000000002073c1e llvm::sys::RunSignalHandlers()
(/home/absozero/trunk/root-clang/bin/clang-7+0x2073c1e)
#2 0x0000000002075df2 SignalHandler(int)
(/home/absozero/trunk/root-clang/bin/clang-7+0x2075df2)
#3 0x00007fcaff07c330 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10330)
#4 0x00007fcafdc57c37 gsignal
/build/eglibc-ripdx6/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007fcafdc5b028 abort
/build/eglibc-ripdx6/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007fcafdc50bf6 __assert_fail_base
/build/eglibc-ripdx6/eglibc-2.19/assert/assert.c:92:0
#7 0x00007fcafdc50ca2 (/lib/x86_64-linux-gnu/libc.so.6+0x2fca2)
#8 0x000000000161f9c9 llvm::LoopBase<llvm::BasicBlock,
llvm::Loop>::verifyLoop() const
(/home/absozero/trunk/root-clang/bin/clang-7+0x161f9c9)
#9 0x0000000003e67d28
llvm::FunctionToLoopPassAdaptor<llvm::PassManager<llvm::Loop,
llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>,
llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&> >::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x3e67d28)
#10 0x0000000003e676dd llvm::detail::PassModel<llvm::Function,
llvm::FunctionToLoopPassAdaptor<llvm::PassManager<llvm::Loop,
llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>,
llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&> >,
llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Function>
>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x3e676dd)
#11 0x0000000001b7360e llvm::PassManager<llvm::Function,
llvm::AnalysisManager<llvm::Function> >::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x1b7360e)
#12 0x0000000003e6c95a
llvm::CGSCCToFunctionPassAdaptor<llvm::PassManager<llvm::Function,
llvm::AnalysisManager<llvm::Function> > >::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x3e6c95a)
#13 0x0000000003e6c5ed llvm::detail::PassModel<llvm::LazyCallGraph::SCC,
llvm::CGSCCToFunctionPassAdaptor<llvm::PassManager<llvm::Function,
llvm::AnalysisManager<llvm::Function> > >, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x3e6c5ed)
#14 0x0000000003fad98d llvm::PassManager<llvm::LazyCallGraph::SCC,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x3fad98d)
#15 0x0000000003e77b8c
llvm::DevirtSCCRepeatedPass<llvm::PassManager<llvm::LazyCallGraph::SCC,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>
>::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x3e77b8c)
#16 0x0000000003e77331
llvm::ModuleToPostOrderCGSCCPassAdaptor<llvm::DevirtSCCRepeatedPass<llvm::PassManager<llvm::LazyCallGraph::SCC,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&> > >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x3e77331)
#17 0x0000000003e764fd llvm::detail::PassModel<llvm::Module,
llvm::ModuleToPostOrderCGSCCPassAdaptor<llvm::DevirtSCCRepeatedPass<llvm::PassManager<llvm::LazyCallGraph::SCC,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&> > >, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x3e764fd)
#18 0x0000000001b71d4b llvm::PassManager<llvm::Module,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x1b71d4b)
#19 0x0000000003e7d0ed llvm::detail::PassModel<llvm::Module,
llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module> >,
llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Module>
>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x3e7d0ed)
#20 0x0000000001b71d4b llvm::PassManager<llvm::Module,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x1b71d4b)
#21 0x000000000223de76 (anonymous
namespace)::EmitAssemblyHelper::EmitAssemblyWithNewPassManager(clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/home/absozero/trunk/root-clang/bin/clang-7+0x223de76)
#22 0x0000000002238d6b 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_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/home/absozero/trunk/root-clang/bin/clang-7+0x2238d6b)
#23 0x0000000002b61033
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x2b61033)
#24 0x00000000030f1744 clang::ParseAST(clang::Sema&, bool, bool)
(/home/absozero/trunk/root-clang/bin/clang-7+0x30f1744)
#25 0x00000000026da270 clang::FrontendAction::Execute()
(/home/absozero/trunk/root-clang/bin/clang-7+0x26da270)
#26 0x0000000002683871
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/home/absozero/trunk/root-clang/bin/clang-7+0x2683871)
#27 0x000000000277e569
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/home/absozero/trunk/root-clang/bin/clang-7+0x277e569)
#28 0x0000000000912dd8 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/home/absozero/trunk/root-clang/bin/clang-7+0x912dd8)
#29 0x000000000091071f main
(/home/absozero/trunk/root-clang/bin/clang-7+0x91071f)
#30 0x00007fcafdc42f45 __libc_start_main
/build/eglibc-ripdx6/eglibc-2.19/csu/libc-start.c:321:0
#31 0x000000000090d7ad _start
(/home/absozero/trunk/root-clang/bin/clang-7+0x90d7ad)
clang-7: error: unable to execute command: Aborted (core dumped)
clang-7: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 7.0.0 (trunk 334360)
Target: i386-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
clang-7: note: diagnostic msg: PLEASE submit a bug report to
https://bugs.llvm.org/ and include the crash backtrace, preprocessed source,
and associated run script.
clang-7: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-7: note: diagnostic msg: /tmp/abc-b79813.c
clang-7: note: diagnostic msg: /tmp/abc-b79813.sh
clang-7: note: diagnostic msg:

********************

$ cat abc.c
struct S1 {
  int f1;
} g;
int a, d, e;
static struct S1 b;
char c;
long f;
struct S1 fn1() {
l1:
  f = 1;
  for (; f; f--) {
    short h;
    if (c > (d = 0))
      return b;
    {
      for (; a;) {
        fn2();
        goto l1;
      }
      if (g.f1)
        break;
    }
    for (; e;)
      for (;;)
        ;
  }
}

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[llvm-bugs] [Bug 37764] New: clang crashes with "-fexperimental-new-pass-manager": Assertion `std::any_of(GraphTraits<BlockT *>::child_begin(BB), GraphTraits<BlockT *>::child_end(BB), [&](BlockT *B) { return contains(B); }) && "Loop block has no in-loop successors!"' failed.

[llvm-bugs] [Bug 37764] New: clang crashes with "-fexperimental-new-pass-manager": Assertion `std::any_of(GraphTraits<BlockT >::child_begin(BB), GraphTraits<BlockT >::child_end(BB), [&](BlockT *B) { return contains(B); }) && "Loop block has no in-loop successors!"' failed.