The operand to the visibility attribute is required to be a quoted string, not a bare identifier.

llvm-svn: 47893
diff --git a/clang/test/CodeGen/attributes.c b/clang/test/CodeGen/attributes.c
index 3533d6d..a310a3a 100644
--- a/clang/test/CodeGen/attributes.c
+++ b/clang/test/CodeGen/attributes.c
@@ -11,14 +11,14 @@
 void t3() {}
 
 // RUN: clang -emit-llvm < %s | grep 'hidden.*t4'
-void t4() __attribute__((visibility(hidden)));
+void t4() __attribute__((visibility("hidden")));
 void t4() {}
 
 // RUN: clang -emit-llvm < %s | grep 't5.*weak'
 int t5 __attribute__((weak)) = 2;
 
 // RUN: clang -emit-llvm < %s | grep 't6.*protected'
-int t6 __attribute__((visibility(protected)));
+int t6 __attribute__((visibility("protected")));
 
 // RUN: clang -emit-llvm < %s | grep 't7.*noreturn'
 // RUN: clang -emit-llvm < %s | grep 't7.*nounwind'