clayborg wrote:

> Can we make this less brute force? I believe searching for the Build ID Note 
> should be a completely deterministic process, without the need for 
> heuristics. You start with the elf header, find the program headers, iterate 
> to find the PT_NOTE segment (there could be more of them), and iterate over 
> the notes until you find NT_GNU_BUILD_ID. All of these things should be in 
> the memory (=> also in the core file) and within the first 4k of the mapping. 
> There should be no need to search through a potentially huge file mapping 
> just to see if it contains the build id.

Yes, we can parse the program headers. That is a good idea as long as all the 
info we need is mapped

https://github.com/llvm/llvm-project/pull/92078
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