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How to read Source Link JSON data from PDBs #723

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@gregwb

Is there a supported way for retrieving Source Link URLs from PDB files?

For writing tools that use Source Link data, there's a useful SourceLinkMap for parsing the JSON, but how can the JSON be read from a PDB in the first place?

I note that the symreader-converter project has code for reading Source Link data, but from my experimentation, I believe the APIs used there do not support PDBs for native C++ projects. I would like in particular to be able to read Source Link data embedded in native PDBs by the C++ linker.

From this comment it appears at a pinch I may be able to use pdbstr.exe to extract streams sourcelink$1, sourcelink$2, ... etc. But I was hoping for a more convenient API than a command-line tool.

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