Sema/AST support for attribute used. Patch by Anders Johnson (with small tweaks & test case)!

llvm-svn: 64478

1 files changed, 17 insertions, 0 deletions

diff --git a/clang/test/Sema/attr-used.c b/clang/test/Sema/attr-used.c
new file mode 100644
index 00000000000..7d0265ef323
--- /dev/null
+++ b/clang/test/Sema/attr-used.c
@@ -0,0 +1,17 @@
+// RUN: clang -verify -fsyntax-only %s
+
+struct __attribute__((used)) s { // expected-warning {{'used' attribute only applies to variable and function types}}
+  int x;
+};
+
+int a __attribute__((used));
+
+static void __attribute__((used)) f0(void) {
+}
+
+void f1() {
+  static int a __attribute__((used)); 
+  int b __attribute__((used)); // expected-warning {{used attribute ignored}}
+}
+
+