1 files changed, 41 insertions, 0 deletions
diff --git a/clang-tools-extra/test/clang-tidy/bugprone-lambda-function-name.cpp b/clang-tools-extra/test/clang-tidy/bugprone-lambda-function-name.cpp
new file mode 100644
index 00000000000..145928b4e20
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/bugprone-lambda-function-name.cpp
@@ -0,0 +1,41 @@
+// RUN: %check_clang_tidy %s bugprone-lambda-function-name %t
+
+void Foo(const char* a, const char* b, int c) {}
+
+#define FUNC_MACRO Foo(__func__, "", 0)
+#define FUNCTION_MACRO Foo(__FUNCTION__, "", 0)
+#define EMBED_IN_ANOTHER_MACRO1 FUNC_MACRO
+
+void Positives() {
+  [] { __func__; }();
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: inside a lambda, '__func__' expands to the name of the function call operator; consider capturing the name of the enclosing function explicitly [bugprone-lambda-function-name]
+  [] { __FUNCTION__; }();
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: inside a lambda, '__FUNCTION__' expands to the name of the function call operator; consider capturing the name of the enclosing function explicitly [bugprone-lambda-function-name]
+  [] { FUNC_MACRO; }();
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: inside a lambda, '__func__' expands to the name of the function call operator; consider capturing the name of the enclosing function explicitly [bugprone-lambda-function-name]
+  [] { FUNCTION_MACRO; }();
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: inside a lambda, '__FUNCTION__' expands to the name of the function call operator; consider capturing the name of the enclosing function explicitly [bugprone-lambda-function-name]
+  [] { EMBED_IN_ANOTHER_MACRO1; }();
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: inside a lambda, '__func__' expands to the name of the function call operator; consider capturing the name of the enclosing function explicitly [bugprone-lambda-function-name]
+}
+
+#define FUNC_MACRO_WITH_FILE_AND_LINE Foo(__func__, __FILE__, __LINE__)
+#define FUNCTION_MACRO_WITH_FILE_AND_LINE Foo(__FUNCTION__, __FILE__, __LINE__)
+#define EMBED_IN_ANOTHER_MACRO2 FUNC_MACRO_WITH_FILE_AND_LINE
+
+void Negatives() {
+  __func__;
+  __FUNCTION__;
+
+  // __PRETTY_FUNCTION__ should not trigger a warning because its value is
+  // actually potentially useful.
+  __PRETTY_FUNCTION__;
+  [] { __PRETTY_FUNCTION__; }();
+
+  // Don't warn if __func__/__FUNCTION is used inside a macro that also uses
+  // __FILE__ and __LINE__, on the assumption that __FILE__ and __LINE__ will
+  // be useful even if __func__/__FUNCTION__ is not.
+  [] { FUNC_MACRO_WITH_FILE_AND_LINE; }();
+  [] { FUNCTION_MACRO_WITH_FILE_AND_LINE; }();
+  [] { EMBED_IN_ANOTHER_MACRO2; }();
+}