1 files changed, 42 insertions, 0 deletions
diff --git a/clang-tools-extra/test/clang-tidy/readability-redundant-string-cstr.cpp b/clang-tools-extra/test/clang-tidy/readability-redundant-string-cstr.cpp
new file mode 100644
index 00000000000..42f4307b188
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/readability-redundant-string-cstr.cpp
@@ -0,0 +1,42 @@
+// RUN: $(dirname %s)/check_clang_tidy.sh %s readability-redundant-string-cstr %t
+// REQUIRES: shell
+
+namespace std {
+template <typename T>
+class allocator {};
+template <typename T>
+class char_traits {};
+template <typename C, typename T, typename A>
+struct basic_string {
+  basic_string();
+  basic_string(const C *p, const A &a = A());
+  const C *c_str() const;
+};
+typedef basic_string<char, std::char_traits<char>, std::allocator<char>> string;
+}
+namespace llvm {
+struct StringRef {
+  StringRef(const char *p);
+  StringRef(const std::string &);
+};
+}
+
+void f1(const std::string &s) {
+  f1(s.c_str());
+  // CHECK-MESSAGES: :[[@LINE-1]]:6: warning: redundant call to `c_str()` [readability-redundant-string-cstr]
+  // CHECK-FIXES: {{^  }}f1(s);{{$}}
+}
+void f2(const llvm::StringRef r) {
+  std::string s;
+  f2(s.c_str());
+  // CHECK-MESSAGES: :[[@LINE-1]]:6: warning: redundant call {{.*}}
+  // CHECK-FIXES: {{^  }}std::string s;{{$}}
+  // CHECK-FIXES-NEXT: {{^  }}f2(s);{{$}}
+}
+void f3(const llvm::StringRef &r) {
+  std::string s;
+  f3(s.c_str());
+  // CHECK-MESSAGES: :[[@LINE-1]]:6: warning: redundant call {{.*}}
+  // CHECK-FIXES: {{^  }}std::string s;{{$}}
+  // CHECK-FIXES-NEXT: {{^  }}f3(s);{{$}}
+}