[PATCH] D138176: [dsymutil] Fix assertion: (Ref > InputDIE.getOffset()), function cloneDieReferenceAttribute

Mon Nov 28 08:24:44 PST 2022

JDevlieghere added a comment.

In D138176#3937163 <https://reviews.llvm.org/D138176#3937163>, @avl wrote:

> That might be an error if referenced DIE is not cloned.

@friss and I were starting to wonder the same thing. I was out last week because of Thanksgiving but I'll dig into this a bit more this week.

In D138176#3939686 <https://reviews.llvm.org/D138176#3939686>, @avl wrote:

> @JDevlieghere Is this assertion happened in single thread mode only, or multi-thread mode only, or both?

This is happening in dsymutil which runs in "lockstep mode" where analyze and clone happen sequentially per CU (but we start analyzing the next CU while we're cloning the previous one). It definitely sounds like that could have something to do with it.

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https://reviews.llvm.org/D138176