[LLVMbugs] [Bug 10174] New: Incorrect decoration of symbols in export declaration (dllexport)

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10174

           Summary: Incorrect decoration of symbols in export declaration
                    (dllexport)
           Product: tools
           Version: 2.9
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P
         Component: llc
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: l0calh05t at gmx.net
                CC: llvmbugs at cs.uiuc.edu


When a function is declared with the dllexport option such as

define dllexport %struct.AEffect* @VSTPluginMain(i32 (%struct.AEffect*, i32,
i32, i32, i8*, float)* %audioMaster)

results in the symbol _VstPluginMain (with _ prefix) in the generated assembly,
as required per dll export rules, but the export declaration

.ascii     " -export:_VSTPluginMain"

should *NOT* contain this decoration, which results in the following linker
error:

Cannot export _VSTPluginMain: symbol not found

Manually correcting the export declaration to

.ascii     " -export:VSTPluginMain"

corrects this error.

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