[LLVMbugs] [Bug 22351] New: [3.6] assertion failed when using -flto with undefined symbols

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=22351

            Bug ID: 22351
           Summary: [3.6] assertion failed when using -flto with undefined
                    symbols
           Product: tools
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: gold-plugin
          Assignee: unassignedbugs at nondot.org
          Reporter: sgvozdar at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Reproducer:

int foo();
int main()
{
    return foo();
}

#3.6
$ clang -flto main.cpp
repo/tools/gold/gold-plugin.cpp:636: std::unique_ptr<Module>
getModuleForFile(llvm::LLVMContext &, <anonymous>::claimed_file &,
llvm::raw_fd_ostream *, StringSet<> &, StringSet<> &): Assertion
`GV->hasComdat()' failed.
clang: error: unable to execute command: Aborted (core dumped)
clang: error: linker command failed due to signal (use -v to see invocation)

#trunk
$ clang -flto main.cpp
clang: error: linker command failed with exit code 1 (use -v to see invocation)



Sergey Gvozdarev
===============
Software Engineer
Intel Compiler Team

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