[LLVMbugs] [Bug 22542] New: multiple definition of `__clang_call_terminate' under mingw

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=22542

            Bug ID: 22542
           Summary: multiple definition of `__clang_call_terminate' under
                    mingw
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: yaron.keren at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 13840
  --> http://llvm.org/bugs/attachment.cgi?id=13840&action=edit
first source file

Compiling the attached sources:

  clang++ *.cpp

results in linking error, multiple definition of `__clang_call_terminate'.

This is probably the result of COFF not supporting the Linkage/Visibility
getClangCallTerminateFn uses:

    // Allow this function to be shared across translation units, but
    // we don't want it to turn into an exported symbol.
    fn->setLinkage(llvm::Function::LinkOnceODRLinkage);
    fn->setVisibility(llvm::Function::HiddenVisibility);

As a fix maybe another Linkage/Visibility combination will work or we could
turn off useClangCallTerminate() for mingw/coff targets.

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