[PATCH] D30412: [clang-tidy] Fix a false positive on modernize-use-nullptr check.

[Haojian Wu via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL296479: [clang-tidy] Fix a false positive on modernize-use-nullptr check. (authored by hokein).

Changed prior to commit:
  https://reviews.llvm.org/D30412?vs=89894&id=90032#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D30412

Files:
  clang-tools-extra/trunk/clang-tidy/modernize/UseNullptrCheck.cpp
  clang-tools-extra/trunk/test/clang-tidy/modernize-use-nullptr.cpp


Index: clang-tools-extra/trunk/clang-tidy/modernize/UseNullptrCheck.cpp
===================================================================
--- clang-tools-extra/trunk/clang-tidy/modernize/UseNullptrCheck.cpp
+++ clang-tools-extra/trunk/clang-tidy/modernize/UseNullptrCheck.cpp
@@ -190,8 +190,10 @@
   bool VisitStmt(Stmt *S) {
     auto *C = dyn_cast<CastExpr>(S);
     // Catch the castExpr inside cxxDefaultArgExpr.
-    if (auto *E = dyn_cast<CXXDefaultArgExpr>(S))
+    if (auto *E = dyn_cast<CXXDefaultArgExpr>(S)) {
       C = dyn_cast<CastExpr>(E->getExpr());
+      FirstSubExpr = nullptr;
+    }
     if (!C) {
       FirstSubExpr = nullptr;
       return true;
Index: clang-tools-extra/trunk/test/clang-tidy/modernize-use-nullptr.cpp
===================================================================
--- clang-tools-extra/trunk/test/clang-tidy/modernize-use-nullptr.cpp
+++ clang-tools-extra/trunk/test/clang-tidy/modernize-use-nullptr.cpp
@@ -228,3 +228,19 @@
 void test_default_argument() {
   D(nullptr);
 }
+
+// Test on two neighbour CXXDefaultArgExprs nodes.
+typedef unsigned long long uint64;
+struct ZZ {
+  explicit ZZ(uint64, const uint64* = NULL) {}
+// CHECK-MESSAGES: :[[@LINE-1]]:39: warning: use nullptr
+// CHECK-FIXES: explicit ZZ(uint64, const uint64* = nullptr) {}
+  operator bool()  { return true; }
+};
+
+uint64 Hash(uint64 seed = 0) { return 0; }
+
+void f() {
+  bool a;
+  a = ZZ(Hash());
+}


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D30412.90032.patch
Type: text/x-patch
Size: 1432 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20170228/afc14b2f/attachment.bin>