Add the clang library to the repo (with some of my changes, too).

1 files changed, 65 insertions, 0 deletions

diff --git a/clang/test/Sema/pragma-unused.c b/clang/test/Sema/pragma-unused.c
new file mode 100644
index 0000000..aafac0d
--- /dev/null
+++ b/clang/test/Sema/pragma-unused.c
@@ -0,0 +1,65 @@
+// RUN: %clang_cc1 -fsyntax-only -Wunused-parameter -Wused-but-marked-unused -Wunused -verify %s
+
+void f1(void) {
+  int x, y, z;
+  #pragma unused(x)
+  #pragma unused(y, z)
+  
+  int w; // expected-warning {{unused}}
+  #pragma unused w // expected-warning{{missing '(' after '#pragma unused' - ignoring}}
+}
+
+void f2(void) {
+  int x, y; // expected-warning {{unused}} expected-warning {{unused}}
+  #pragma unused(x,) // expected-warning{{expected '#pragma unused' argument to be a variable name}}
+  #pragma unused() // expected-warning{{expected '#pragma unused' argument to be a variable name}}
+}
+
+void f3(void) {
+  #pragma unused(x) // expected-warning{{undeclared variable 'x' used as an argument for '#pragma unused'}}
+}
+
+void f4(void) {
+  int w; // expected-warning {{unused}}
+  #pragma unused((w)) // expected-warning{{expected '#pragma unused' argument to be a variable name}}
+}
+
+void f6(void) {
+  int z; // no-warning
+  {
+    #pragma unused(z) // no-warning
+  }
+}
+
+void f7() {
+  int y;
+  #pragma unused(undeclared, undefined, y) // expected-warning{{undeclared variable 'undeclared' used as an argument for '#pragma unused'}} expected-warning{{undeclared variable 'undefined' used as an argument for '#pragma unused'}}
+}
+
+int f8(int x) { // expected-warning{{unused parameter 'x'}}
+  return 0;
+}
+
+int f9(int x) {
+  return x;
+}
+
+int f10(int x) {
+  #pragma unused(x)
+  return 0;
+}
+
+int f11(int x) {
+  #pragma unused(x)
+  return x; // expected-warning{{'x' was marked unused but was used}}
+}
+
+int f12(int x) {
+  int y = x;
+  #pragma unused(x) // expected-warning{{'x' was marked unused but was used}}
+  return y;
+}
+
+// rdar://8793832
+static int glob_var = 0;
+#pragma unused(glob_var)