1 files changed, 23 insertions, 0 deletions
diff --git a/clang/unittests/ASTMatchers/ASTMatchersNodeTest.cpp b/clang/unittests/ASTMatchers/ASTMatchersNodeTest.cpp
index c24598d..6fb4372 100644
--- a/clang/unittests/ASTMatchers/ASTMatchersNodeTest.cpp
+++ b/clang/unittests/ASTMatchers/ASTMatchersNodeTest.cpp
@@ -1885,6 +1885,29 @@ TEST_P(ASTMatchersTest, NestedNameSpecifier) {
                  nestedNameSpecifier()));
 }
 
+TEST_P(ASTMatchersTest, Attr) {
+  // Windows adds some implicit attributes.
+  bool AutomaticAttributes = StringRef(GetParam().Target).contains("win32");
+  if (GetParam().isCXX11OrLater()) {
+    EXPECT_TRUE(matches("struct [[clang::warn_unused_result]] F{};", attr()));
+
+      // Unknown attributes are not parsed into an AST node.
+    if (!AutomaticAttributes)
+      EXPECT_TRUE(notMatches("int x [[unknownattr]];", attr()));
+    }
+  }
+  if (GetParam().isCXX17OrLater()) {
+    EXPECT_TRUE(matches("struct [[nodiscard]] F{};", attr()));
+  }
+  EXPECT_TRUE(matches("int x(int * __attribute__((nonnull)) );", attr()));
+  if (!AutomaticAttributes) {
+    EXPECT_TRUE(notMatches("struct F{}; int x(int *);", attr()));
+    // Some known attributes are not parsed into an AST node.
+    EXPECT_TRUE(notMatches("typedef int x __attribute__((ext_vector_type(1)));",
+                           attr()));
+  }
+}
+
 TEST_P(ASTMatchersTest, NullStmt) {
   EXPECT_TRUE(matches("void f() {int i;;}", nullStmt()));
   EXPECT_TRUE(notMatches("void f() {int i;}", nullStmt()));