[PATCH] D48958: [clang][ubsan] Implicit Cast Sanitizer - integer truncation - clang part

[Roman Lebedev via Phabricator via cfe-commits]

lebedev.ri updated this revision to Diff 155149.
lebedev.ri marked 7 inline comments as done.
lebedev.ri added a comment.

Address @vsk's review notes.

- Maintain the stack of currently-being-visited `CastExpr`'s
- Use that stack to check whether we are in a `ExplicitCastExpr`
- Move logic for deciding whether to emit the check out of `EmitScalarConversion()`
- Condense all overloads of `EmitScalarConversion()` down to one.


Repository:
  rC Clang

https://reviews.llvm.org/D48958

Files:
  docs/ReleaseNotes.rst
  docs/UndefinedBehaviorSanitizer.rst
  include/clang/Basic/Sanitizers.def
  include/clang/Basic/Sanitizers.h
  lib/CodeGen/CGExprScalar.cpp
  lib/CodeGen/CodeGenFunction.h
  lib/Driver/SanitizerArgs.cpp
  lib/Driver/ToolChain.cpp
  test/CodeGen/catch-implicit-integer-truncations.c
  test/CodeGenCXX/catch-implicit-integer-truncations.cpp
  test/Driver/fsanitize.c

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