tree 1426a421a081f7d5fec9d2cfe965da56b68fa4d7
parent 530fa4fc800f2788cfe6d4113677ca631d1e801f
author Richard Smith <richard-llvm@metafoo.co.uk> 1382076318 +0000
committer Richard Smith <richard-llvm@metafoo.co.uk> 1382076318 +0000

Basic ODR checking for C++ modules:

If we have multiple definitions of the same entity from different modules, we
nominate the first definition which we see as being the canonical definition.
If we load a declaration from a different definition and we can't find a
corresponding declaration in the canonical definition, issue a diagnostic.

This is insufficient to prevent things from going horribly wrong in all cases
-- we might be in the middle of emitting IR for a function when we trigger some
deserialization and discover that it refers to an incoherent piece of the AST,
by which point it's probably too late to bail out -- but we'll at least produce
a diagnostic.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192950 91177308-0d34-0410-b5e6-96231b3b80d8