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[Expression parser] Return both types and variables

Description

[Expression parser] Return both types and variables

Many times a user wants to access a type when there's a variable of
the same name, or a variable when there's a type of the same name.
Depending on the precise context, currently the expression parser
can fail to resolve one or the other.

This is because ClangExpressionDeclMap has logic to limit the
amount of information it searches, and that logic sometimes cuts
down the search prematurely. This patch removes some of those early
exits.

In that sense, this patch trades performance (early exit is faster)
for correctness.

I've also included two new test cases showing examples of this
behavior – as well as modifying an existing test case that gets it
wrong.

Details

Committed
spyffeApr 24 2017, 4:14 PM
Parents
rL301272: [asan] Fix Windows global dead stripping tests
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