1 files changed, 80 insertions, 0 deletions
diff --git a/clang/test/Preprocessor/pragma_diagnostic_sections.cpp b/clang/test/Preprocessor/pragma_diagnostic_sections.cpp
new file mode 100644
index 0000000..b680fae
--- /dev/null
+++ b/clang/test/Preprocessor/pragma_diagnostic_sections.cpp
@@ -0,0 +1,80 @@
+// RUN: %clang_cc1 -fsyntax-only -Wall -Wunused-macros -Wunused-parameter -Wno-uninitialized -verify %s
+
+// rdar://8365684
+struct S {
+    void m1() { int b; while (b==b); } // expected-warning {{always evaluates to true}}
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wtautological-compare"
+    void m2() { int b; while (b==b); }
+#pragma clang diagnostic pop
+
+    void m3() { int b; while (b==b); } // expected-warning {{always evaluates to true}}
+};
+
+//------------------------------------------------------------------------------
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wtautological-compare"
+template <typename T>
+struct TS {
+    void m() { T b; while (b==b); }
+};
+#pragma clang diagnostic pop
+
+void f() {
+    TS<int> ts;
+    ts.m();
+}
+
+//------------------------------------------------------------------------------
+
+#define UNUSED_MACRO1 // expected-warning {{macro is not used}}
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-macros"
+#define UNUSED_MACRO2
+#pragma clang diagnostic pop
+
+//------------------------------------------------------------------------------
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreturn-type"
+int g() { }
+#pragma clang diagnostic pop
+
+//------------------------------------------------------------------------------
+
+void ww(
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-parameter"
+        int x,
+#pragma clang diagnostic pop
+        int y) // expected-warning {{unused}}
+{
+}
+
+//------------------------------------------------------------------------------
+
+struct S2 {
+    int x, y;
+    S2() : 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreorder"
+    y(),
+    x()
+#pragma clang diagnostic pop
+    {}
+};
+
+//------------------------------------------------------------------------------
+
+// rdar://8790245
+#define MYMACRO \
+    _Pragma("clang diagnostic push") \
+    _Pragma("clang diagnostic ignored \"-Wunknown-pragmas\"") \
+    _Pragma("clang diagnostic pop")
+MYMACRO
+#undef MYMACRO
+
+//------------------------------------------------------------------------------