clayborg wrote:

Since .dwp files can get large, it is ok for the `.debug_info.dwo` section to 
exceed 4GB as we can parse the linked list of dwarf units in the 
`.debug_info.dwo` and ignore the CU and TU indexes which are limited to 4GB. We 
have work arounds already checked into LLVM's DWARF code that detects this 
issues and reconstructs the CU and TU index to be 64 bit safe. So this fix 
allows variables to show correctly when they have a `DW_AT_frame_base` 
attribute on the `DW_TAG_subprogram` were the `.debug_info.dwo` offset of the 
`DW_TAG_subprogram` is over 4GB.

https://github.com/llvm/llvm-project/pull/110388
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