[LLVMbugs] [Bug 9183] New: -fvisibility=internal not implemented

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9183

           Summary: -fvisibility=internal not implemented
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: reid.kleckner at gmail.com
                CC: llvmbugs at cs.uiuc.edu


I ran into this while compiling DynamoRIO with clang.

Does anyone even know what the heck it means?  So far as I can tell, it's
identical to hidden visibility, except that you also promise that no one
outside the DSO you going to link can get a function pointer to functions with
internal visibility.  That interpretation is based on this Intel doc:

http://software.intel.com/sites/products/documentation/studio/composer/en-us/2009/compiler_c/copts/common_options/option_fvisibility.htm


To aim for bug-for-bug compatibility with the gcc driver, I'd just interpret
internal as hidden.  Alternatively, someone can go look at the gcc source and
see how they interpret internal.

If calling it hidden works, I can write a patch.

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