[LLVMbugs] [Bug 15492] New: CUDA: CodeGenModule::GetGlobalVarAddressSpace can't handle null VarDecl

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15492

            Bug ID: 15492
           Summary: CUDA: CodeGenModule::GetGlobalVarAddressSpace can't
                    handle null VarDecl
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: jordan_rose at apple.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

CodeGenModule::GetOrCreateLLVMGlobal can be used to look up globals without an
associated VarDecl. However, if CUDA is enabled,
CodeGenModule::GetGlobalVarAddressSpace will unconditionally check to see if
the (potentially absent) VarDecl has one of the CUDA address space attributes.
Either there should be an assertion that GetGlobalVarAddressSpace is never
called with a null VarDecl under CUDA, or (more likely) there should be a null
check for the VarDecl.

Found by the static analyzer in r176829.

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