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type units were enabled. The crux of the issue is that the addDwarfTypeUnitType routine can end up being indirectly recursive. In this case, the reference into the dense map (TU) became invalid by the time we popped all the way back and used it to add the DIE type signature. Instead, use early return in the case where we can bypass the recursive step and creating a type unit. Then use the pointer to the new type unit to set up the DIE type signature in the case where we have to. I tried really hard to reduce a testcase for this, but it's really annoying. You have to get this to be mid-recursion when the densemap grows. Even if we got a test case for this today, it'd be very unlikely to continue exercising this pattern. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199630 91177308-0d34-0410-b5e6-96231b3b80d8
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