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The TypeIndex used by cl.exe is 0x103, which indicates a SimpleTypeMode of NearPointer (note the absence of the bitness, normally pointers use a mode of NearPointer32 or NearPointer64) and a SimpleTypeKind of void. So this is basically a void*, but without a specified size, which makes sense given how std::nullptr_t is defined. clang-cl was actually not emitting *anything* for this. Instead, when we encountered std::nullptr_t in a DIType, we would actually just emit a TypeIndex of 0, which is obviously wrong. std::nullptr_t in DWARF is represented as a DW_TAG_unspecified_type with a name of "decltype(nullptr)", so we add that logic along with a test, as well as an update to the dumping code so that we no longer print void* when dumping 0x103 (which would previously treat Void/NearPointer no differently than Void/NearPointer64). Differential Revision: https://reviews.llvm.org/D53957 llvm-svn: 345811 |
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