[clang-tidy] new cppcoreguidelines-narrowing-conversions check.

Summary:
Checks for narrowing conversions, e.g.

int i = 0;
i += 0.1;

This has what some might consider false positives for:
i += ceil(d);

Reviewers: alexfh, hokein

Subscribers: srhines, nemanjai, mgorny, JDevlieghere, xazax.hun, kbarton

Differential Revision: https://reviews.llvm.org/D38455

llvm-svn: 333066

1 files changed, 3 insertions, 0 deletions

diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/CppCoreGuidelinesTidyModule.cpp b/clang-tools-extra/clang-tidy/cppcoreguidelines/CppCoreGuidelinesTidyModule.cpp
index 51824eca9ac..a0392594696 100644
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/CppCoreGuidelinesTidyModule.cpp
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/CppCoreGuidelinesTidyModule.cpp
@@ -13,6 +13,7 @@
 #include "../misc/UnconventionalAssignOperatorCheck.h"
 #include "AvoidGotoCheck.h"
 #include "InterfacesGlobalInitCheck.h"
+#include "NarrowingConversionsCheck.h"
 #include "NoMallocCheck.h"
 #include "OwningMemoryCheck.h"
 #include "ProBoundsArrayToPointerDecayCheck.h"
@@ -40,6 +41,8 @@ public:
         "cppcoreguidelines-avoid-goto");
     CheckFactories.registerCheck<InterfacesGlobalInitCheck>(
         "cppcoreguidelines-interfaces-global-init");
+    CheckFactories.registerCheck<NarrowingConversionsCheck>(
+        "cppcoreguidelines-narrowing-conversions");
     CheckFactories.registerCheck<NoMallocCheck>("cppcoreguidelines-no-malloc");
     CheckFactories.registerCheck<OwningMemoryCheck>(
         "cppcoreguidelines-owning-memory");