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from 38025c8580 Delete some unreachable AST printing code. new 55d0abdd35 [analyzer] Store ValueDecl in DeclRegion new 5e2a3ae204 [clang][ubsan] Implicit Conversion Sanitizer - integer trunc [...]

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Summary of changes: docs/ReleaseNotes.rst | 32 +- docs/UndefinedBehaviorSanitizer.rst | 34 +- include/clang/Basic/Sanitizers.def | 9 +- include/clang/Basic/Sanitizers.h | 3 +- .../StaticAnalyzer/Core/PathSensitive/MemRegion.h | 6 +- lib/CodeGen/CGExprScalar.cpp | 105 +++++- lib/CodeGen/CodeGenFunction.h | 1 + lib/Driver/SanitizerArgs.cpp | 10 +- lib/Driver/ToolChain.cpp | 4 +- test/CodeGen/catch-implicit-integer-truncations.c | 395 +++++++++++++++++++++ .../catch-implicit-integer-truncations.cpp | 256 +++++++++++++ test/Driver/fsanitize.c | 17 +- 12 files changed, 832 insertions(+), 40 deletions(-) create mode 100644 test/CodeGen/catch-implicit-integer-truncations.c create mode 100644 test/CodeGenCXX/catch-implicit-integer-truncations.cpp