[PATCH] D105457: [clang] Refactor AST printing tests to share more infrastructure

[David Blaikie via Phabricator via cfe-commits]

dblaikie added a comment.

In D105457#2874783 <https://reviews.llvm.org/D105457#2874783>, @nridge wrote:

> To be honest, I don't really understand this error. It seems to come from a compile step (not a link step), and it comes from the assembler and says "symbol ... is already defined"? I don't think I've seen an error like that before. (Typically, errors about duplicate definitions would come from the linker.)
>
> Any suggestions for what it might indicate or how to investigate are welcome.

Yeah, I'm with you there.

@dyung @glaubitz - perhaps you two could help with a reduced example of what causes this, it does look like a bug in the compiler (yeah, I'd at first assumed a bug in the standard library that caused a link error, but as @nridge pointed out it's not a link error but an assembly error - which really looks like a compiler bug to me) - but likely there's some room for a workaround if we knew what we were dealing with and how to workaround it reliably.


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