[LLVMbugs] [Bug 5922] New: DIDerivedType::replaceAllUsesWith should RAUW on MDNodes

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=5922

           Summary: DIDerivedType::replaceAllUsesWith should RAUW on MDNodes
           Product: libraries
           Version: 1.0
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Global Analyses
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: clattner at apple.com
                CC: dpatel at apple.com, llvmbugs at cs.uiuc.edu


As mentioned here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20091228/093293.html

It isn't safe for DIDerivedType::replaceAllUsesWith to RAUW on an mdnode.  Some
other client of MDNodes may be using exactly the same node for different
purposes and this changes all of the uses, not just the debug info uses.


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