[LLVMbugs] [Bug 6790] New: segmentation failure in static initialization

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=6790

           Summary: segmentation failure in static initialization
           Product: tools
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: llvm-g++
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: victor.zverovich at googlemail.com
                CC: llvmbugs at cs.uiuc.edu


The following test program compiled with llvm-g++ from 2.7 prerelease 1
terminates with a segmentation failure:

#include "llvm/Support/CommandLine.h"
static llvm::cl::opt<bool>
    printStats("print-stats",
               llvm::cl::desc("Print performance metrics and statistics"),
               llvm::cl::Hidden);
int main() {}


Call stack:

#0  0x00000000 in ?? ()
#1  0x08054fac in __static_initialization_and_destruction_0 (__initialize_p=1,
__priority=65535) at /usr/local/src/llvm-2.7/lib/Support/Debug.cpp:41
#2  0x0805517e in global constructors keyed to Debug.cpp () at
/usr/local/src/llvm-2.7/lib/Support/Debug.cpp:128
#3  0x08076ae2 in __do_global_ctors_aux ()
#4  0x0807dc94 in _init ()
#5  0x08076999 in __libc_csu_init ()
#6  0x00297af4 in __libc_start_main (main=0x80481d0 <main>, argc=1,
ubp_av=0xbffff514, init=0x8076980 <__libc_csu_init>, fini=0x8076970
<__libc_csu_fini>, 
    rtld_fini=0x11dd20 <_dl_fini>, stack_end=0xbffff50c) at libc-start.c:179
#7  0x08048161 in _start () at ../sysdeps/i386/elf/start.S:119


The generated bitcode file is attached.

The following command is used to produce an executable:

llvm-g++ -use-gold-plugin test.bc
`/usr/local/src/llvm-2.7/install/debug/bin/llvm-config --ldflags --libs core`
-o test

Versions:
llvm-g++ (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2.7)
  llvm version 2.7svn
  Optimized build with assertions.
  Built Apr  6 2010 (06:51:08).
  Host: i386-pc-linux-gnu
  Host CPU: yonah

The segmentation failure only occurs when the program uses debug LLVM libraries
(configured with --disable-optimized).

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