lib/CodeGen/AsmPrinter/DwarfDebug.h:131: void llvm::DbgVariable::addMMIEntry(const llvm::DbgVariable&): Assertion `V.Var == Var && "conflicting variable"' failed.

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1

David, Dean, all,

The bots got red today with assertion failures in llvm::DbgVariable::addMMIEntry:

http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/1816/steps/check-msan%20in%20gcc%20build/logs/stdio
I did not find the offender yet. Any ideas?

2

I give it 99% odds it was r302483. Let’s revert and debug it tomorrow.

3

Thanks!

4

I take it back, that build doesn’t have that revision. It could be r302461, which is from the first failing build: http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/1815

That revision is much safer, though. I am rebuilding with debug info enabled. First I ran check-msan without RelWithDebInfo, and of course I didn’t reproduce the problem.

5

This wasn’t either of my changes, it was actually Adrian’s r302469, which Hans reverted this morning. See http://llvm.org/PR32977

6

Thanks again! The bots are delighted :slight_smile: