Ismail Pazarbasi d60db64e7d Analyzer: Teach analyzer how to handle TypeTraitExpr ...

Summary:
`TypeTraitExpr`s are not supported by the ExprEngine today. Analyzer
creates a sink, and aborts the block. Therefore, certain bugs that
involve type traits intrinsics cannot be detected (see PR24710).

This patch creates boolean `SVal`s for `TypeTraitExpr`s, which are
evaluated by the compiler.

Test within the patch is a summary of PR24710.

Reviewers: zaks.anna, dcoughlin, krememek

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D12482

llvm-svn: 248314

2015-09-22 19:33:15 +00:00

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