llvm/clang/test/Index/symbol-visibility.c

// RUN: c-index-test -test-print-visibility  -fvisibility=default %s | FileCheck %s

__attribute__ ((visibility ("default"))) void foo1();
__attribute__ ((visibility ("hidden"))) void foo2();

// CHECK: FunctionDecl=foo1:3:47visibility=Default
// CHECK: FunctionDecl=foo2:4:46visibility=Hidden