Bob Haarman 9398e86991 [pdb] handle missing pdb streams more gracefully
Summary: The code we use to read PDBs assumed that streams we ask it to read exist, and would read memory outside a vector and crash if this wasn't the case. This would, for example, cause llvm-pdbdump to crash on PDBs generated by lld. This patch handles such cases more gracefully: the PDB reading code in LLVM now reports errors when asked to get a stream that is not present, and llvm-pdbdump will report missing streams and continue processing streams that are present.

Reviewers: ruiu, zturner

Subscribers: thakis, amccarth

Differential Revision: https://reviews.llvm.org/D27325

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288722 91177308-0d34-0410-b5e6-96231b3b80d8
2016-12-05 22:44:00 +00:00
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