[LLVMbugs] [Bug 22722] New: puts segfault under lli but not llc

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Thu Feb 26 17:52:48 PST 2015


http://llvm.org/bugs/show_bug.cgi?id=22722

            Bug ID: 22722
           Summary: puts segfault under lli but not llc
           Product: new-bugs
           Version: 3.5
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: buck.2019 at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

my hello-world program works fine under llc, but segfaults under lli. is there
any reason for that?

http://paste.pound-python.org/show/fXhE19RSX0AqMW2W5hc8/




$ cat hello.ll
; ModuleID = ""
target triple = ""
target datalayout = ""


@".str4" =   global [13 x i8] c"hello\2c\20world\21"
declare i32 @"puts"(i8* %".1") 

define i32 @"main"() 
{
.1:
  %".2" = call i32 (i8*)* @"puts"(i8* getelementptr ([13 x i8]* @".str4", i32
0, i32 0))
  ret i32 0
}




$ make
python hello.py > hello.ll
llc hello.ll
clang hello.s -o hello
./hello
hello, world!



$ cat hello.ll  | lli
0  libLLVM-3.5.dylib        0x0000000104f2dd70
llvm::sys::PrintStackTrace(__sFILE*) + 40
1  libLLVM-3.5.dylib        0x0000000104f2e15b SignalHandler(int) + 248
2  libsystem_platform.dylib 0x00007fff81b345aa _sigtramp + 26
3  libsystem_malloc.dylib   0x00007fff8984727c malloc + 42
4  libsystem_c.dylib        0x00007fff80eeabd0 puts + 53
5  libsystem_c.dylib        0x0000000105e70027 puts + 2230867084
6  libLLVM-3.5.dylib        0x0000000104989b6f
llvm::ExecutionEngine::runFunctionAsMain(llvm::Function*,
std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> > > > const&, char
const* const*) + 1609
7  lli                      0x000000010439707d
8  libdyld.dylib            0x00007fff8bbe75fd start + 1
9  libdyld.dylib            0x0000000000000001 start + 1950452229
Stack dump:
0.      Program arguments: lli 
Segmentation fault: 11



$ llc --version
LLVM (http://llvm.org/):
  LLVM version 3.5.1
  Optimized build with assertions.
  Built Feb 26 2015 (15:28:00).
  Default target: x86_64-apple-darwin13.4.0
  Host CPU: core-avx2

  Registered Targets:
    aarch64    - AArch64 (little endian)
    aarch64_be - AArch64 (big endian)
    arm        - ARM
    arm64      - AArch64 (little endian)
    arm64_be   - AArch64 (big endian)
    armeb      - ARM (big endian)
    cpp        - C++ backend
    hexagon    - Hexagon
    mips       - Mips
    mips64     - Mips64 [experimental]
    mips64el   - Mips64el [experimental]
    mipsel     - Mipsel
    msp430     - MSP430 [experimental]
    nvptx      - NVIDIA PTX 32-bit
    nvptx64    - NVIDIA PTX 64-bit
    ppc32      - PowerPC 32
    ppc64      - PowerPC 64
    ppc64le    - PowerPC 64 LE
    r600       - AMD GPUs HD2XXX-HD6XXX
    sparc      - Sparc
    sparcv9    - Sparc V9
    systemz    - SystemZ
    thumb      - Thumb
    thumbeb    - Thumb (big endian)
    x86        - 32-bit X86: Pentium-Pro and above
    x86-64     - 64-bit X86: EM64T and AMD64
    xcore      - XCore


$ lli --version
LLVM (http://llvm.org/):
  LLVM version 3.5.1
  Optimized build with assertions.
  Built Feb 26 2015 (15:28:00).
  Default target: x86_64-apple-darwin13.4.0
  Host CPU: core-avx2

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