[LLVMbugs] [Bug 5268] New: LTO: clang built with LTO crashes on 1 test

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=5268

           Summary: LTO: clang built with LTO crashes on 1 test
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: edwintorok at gmail.com
                CC: llvmbugs at cs.uiuc.edu


If I build LLVM/Clang with LTO using llvm-g++ and the gold plugin, then clang
fails one test (with a crash), LLVM itself passes all (except load_module that
fails for non-LTO self-host too).

Here is the crash, I haven't bugpointed it yet:

$~/llvm-git/objlto/Release/bin/clang -fsyntax-only -fmessage-length=72
/home/edwin/llvm-git/clang/test/Misc/message-length.c

In file included from /home/edwin/llvm-git/clang/test/Misc/message-length.c:5:  
FILE:9:46: warning: incompatible pointer types initializing 'void (int,
      float, char, float)', expected 'int (*)(int, float, short, float)'
      int (*fp1)(int, float, short, float) = f;
                                             ^
FILE:11:42: warning: incompatible pointer types initializing 'void (int,
      float, char, float)', expected 'int (*)(int, float, short, float)'
  int (*fp2)(int, float, short, float) = f;
                                         ^
FILE:17:120: warning: comparison of distinct pointer types
      ('int *' and 'float *')
  ...== 17) a_func_to_call(ip == FloatPointer, ip[ALongIndexName], ...
                           ~~ ^  ~~~~~~~~~~~~
FILE:20:24: warning: use of GNU 'missing =' extension in designator
  int array0[] = { [3] 3, 5, 7, 4, 2, 7, 6, 3, 4, 5, 6, 7, 8, ...
                       ^
                       =
FILE:23:78: warning: expected 'ON' or 'OFF' or 'DEFAULT' in pragma
      [-Wunknown-pragmas]
0   clang-cc 0x0000000001361cdd
Stack dump:
0.      Program arguments: /home/edwin/llvm-git/objlto/Release/bin/clang-cc
-triple x86_64-unknown-linux-gnu -fsyntax-only -disable-free -main-file-name
message-length.c --relocation-model static --disable-fp-elim --unwind-tables=1
--mcpu=x86-64 --fmath-errno=1 -fmessage-length=72 -fexceptions=0
-fdiagnostics-show-option -x c
/home/edwin/llvm-git/clang/test/Misc/message-length.c
1.      FILE:23:2: current parser token 'pragma'
2.      FILE:16:53: parsing function body 'a_very_long_line'
3.      FILE:16:53: in compound statement ('{}')
clang: error: compiler command failed due to signal 11 (use -v to see
invocation)


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