Add an AST matcher for external formal linkage.
Patch by Visoiu Mistrih
llvm-svn: 278926
diff --git a/clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp b/clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp
index 108fd43..1527eac 100644
--- a/clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp
+++ b/clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp
@@ -1937,5 +1937,21 @@
EXPECT_TRUE(notMatches("int i = 0;", expr(nullPointerConstant())));
}
+TEST(HasExternalFormalLinkage, Basic) {
+ EXPECT_TRUE(matches("int a = 0;", namedDecl(hasExternalFormalLinkage())));
+ EXPECT_TRUE(
+ notMatches("static int a = 0;", namedDecl(hasExternalFormalLinkage())));
+ EXPECT_TRUE(notMatches("static void f(void) { int a = 0; }",
+ namedDecl(hasExternalFormalLinkage())));
+ EXPECT_TRUE(matches("void f(void) { int a = 0; }",
+ namedDecl(hasExternalFormalLinkage())));
+
+ // Despite having internal semantic linkage, the anonymous namespace member
+ // has external linkage because the member has a unique name in all
+ // translation units.
+ EXPECT_TRUE(matches("namespace { int a = 0; }",
+ namedDecl(hasExternalFormalLinkage())));
+}
+
} // namespace ast_matchers
} // namespace clang