[LLVMbugs] [Bug 16644] New: Compiler crash with -O1 in SROA pass

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=16644

            Bug ID: 16644
           Summary: Compiler crash with -O1 in SROA pass
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: hannes at jumpstarter.io
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

It crashed with the Ubuntu release of llvm/clang so I compiled the trunk
instead and got this.

The project is a C program. Unfortunately the source code is proprietary so I
cannot paste the include file. Building with debug works but it appears the
SROA pass crashes clang. Instructions on how to manually disable this pass
would be a helpful workaround.

==========================================================================================

0  clang-3.4       0x0000000001becf94 llvm::sys::PrintStackTrace(_IO_FILE*) +
38
1  clang-3.4       0x0000000001bed21b
2  clang-3.4       0x0000000001becc56
3  libpthread.so.0 0x00007f39796e3bd0
4  clang-3.4       0x0000000000ca7046
5  clang-3.4       0x0000000001ad3f7c llvm::PointerType::get(llvm::Type*,
unsigned int) + 28
6  clang-3.4       0x0000000000ed57b9
7  clang-3.4       0x0000000000ed5873
8  clang-3.4       0x0000000000ed574d
9  clang-3.4       0x0000000000efd337
10 clang-3.4       0x0000000002ca01b2
11 clang-3.4       0x0000000002c9d0fc
12 clang-3.4       0x0000000002ca128e
13 clang-3.4       0x0000000002ca1566
14 clang-3.4       0x0000000002c9d343
15 clang-3.4       0x0000000002ca644f
16 clang-3.4       0x0000000002ca37a3
17 clang-3.4       0x0000000002ca0ba5
18 clang-3.4       0x0000000002c9cbb7
19 clang-3.4       0x0000000002c9e41e
20 clang-3.4       0x0000000002c9ed7f
21 clang-3.4       0x0000000001ac109a
llvm::FPPassManager::runOnFunction(llvm::Function&) + 382
22 clang-3.4       0x0000000001ac0de4
llvm::FunctionPassManagerImpl::run(llvm::Function&) + 84
23 clang-3.4       0x0000000001ac09e2
llvm::FunctionPassManager::run(llvm::Function&) + 180
24 clang-3.4       0x0000000001c24d2a
25 clang-3.4       0x0000000001c24f00
clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions
const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::Module*,
clang::BackendAction, llvm::raw_ostream*) + 136
26 clang-3.4       0x0000000001c20a9c
27 clang-3.4       0x0000000001f95fbf clang::ParseAST(clang::Sema&, bool, bool)
+ 785
28 clang-3.4       0x0000000001ea406a clang::ASTFrontendAction::ExecuteAction()
+ 298
29 clang-3.4       0x0000000001c1fa74 clang::CodeGenAction::ExecuteAction() +
1414
30 clang-3.4       0x0000000001ea3bc0 clang::FrontendAction::Execute() + 200
31 clang-3.4       0x0000000001e7dcf8
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 564
32 clang-3.4       0x0000000001bf1ac5
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1012
33 clang-3.4       0x0000000000c58f37 cc1_main(char const**, char const**, char
const*, void*) + 717
34 clang-3.4       0x0000000000c52fd1 main + 523
35 libc.so.6       0x00007f3978b0fea5 __libc_start_main + 245
36 clang-3.4       0x0000000000c51739
Stack dump:
0.      Program arguments: /usr/local/bin/clang-3.4 -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -disable-free -disable-llvm-verifier
-main-file-name src_lwthreads.i -mrelocation-model static -fmath-errno
-masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array
-target-cpu x86-64 -momit-leaf-frame-pointer -g -coverage-file
/redacted/src_lwthreads.o -resource-dir /usr/local/bin/../lib/clang/3.4 -O1
-Werror -std=c99 -fdebug-compilation-dir /redacted/oc-init -ferror-limit 19
-fmessage-length 0 -mstackrealign -fobjc-runtime=gcc
-fobjc-default-synthesize-properties -fdiagnostics-show-option -vectorize-loops
-fcolor-diagnostics -o /redacted/src_lwthreads.o -x cpp-output
/redacted/src_lwthreads.i
1.      <eof> parser at end of file
2.      Per-function optimization
3.      Running pass 'SROA' on function '@lwt_sigtkill_thread'
clang-3.4: error: unable to execute command: Segmentation fault (core dumped)
clang-3.4: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.4
Target: x86_64-unknown-linux-gnu
Thread model: posix
clang-3.4: note: diagnostic msg: PLEASE submit a bug report to  and include the
crash backtrace, preprocessed source, and associated run script.
clang-3.4: note: diagnostic msg: Error generating preprocessed source(s) - no
preprocessable inputs.

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