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

1 files changed, 80 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/warn-sign-conversion.cpp b/clang/test/SemaCXX/warn-sign-conversion.cpp
new file mode 100644
index 0000000..ba2bc9b
--- /dev/null
+++ b/clang/test/SemaCXX/warn-sign-conversion.cpp
@@ -0,0 +1,80 @@
+// RUN: %clang_cc1 -verify -fsyntax-only -Wsign-conversion %s
+
+// NOTE: When a 'enumeral mismatch' warning is implemented then expect several
+// of the following cases to be impacted.
+
+// namespace for anonymous enums tests
+namespace test1 {
+  enum { A };
+  enum { B = -1 };
+
+  template <typename T> struct Foo {
+    enum { C };
+    enum { D = ~0U };
+  };
+
+  enum { E = ~0U };
+
+  void doit_anonymous( int i ) {
+    int a1 = 1 ? i : A;
+    int a2 = 1 ? A : i;
+
+    int b1 = 1 ? i : B;
+    int b2 = 1 ? B : i;
+
+    int c1 = 1 ? i : Foo<bool>::C;
+    int c2 = 1 ? Foo<bool>::C : i;
+
+    int d1a = 1 ? i : Foo<bool>::D; // expected-warning {{test1::Foo<bool>::<anonymous enum at }}
+    int d1b = 1 ? i : Foo<bool>::D; // expected-warning {{warn-sign-conversion.cpp:13:5>' to 'int'}}
+    int d2a = 1 ? Foo<bool>::D : i; // expected-warning {{operand of ? changes signedness: 'test1::Foo<bool>::<anonymous enum at }}
+    int d2b = 1 ? Foo<bool>::D : i; // expected-warning {{warn-sign-conversion.cpp:13:5>' to 'int'}}
+    int d3a = 1 ? B : Foo<bool>::D; // expected-warning {{operand of ? changes signedness: 'test1::Foo<bool>::<anonymous enum at }}
+    int d3b = 1 ? B : Foo<bool>::D; // expected-warning {{warn-sign-conversion.cpp:13:5>' to 'int'}}
+    int d4a = 1 ? Foo<bool>::D : B; // expected-warning {{operand of ? changes signedness: 'test1::Foo<bool>::<anonymous enum at }}
+    int d4b = 1 ? Foo<bool>::D : B; // expected-warning {{warn-sign-conversion.cpp:13:5>' to 'int'}}
+
+    int e1a = 1 ? i : E; // expected-warning {{operand of ? changes signedness: 'test1::<anonymous enum at }}
+    int e1b = 1 ? i : E; // expected-warning {{warn-sign-conversion.cpp:16:3>' to 'int'}}
+    int e2a = 1 ? E : i; // expected-warning {{operand of ? changes signedness: 'test1::<anonymous enum at }}
+    int e2b = 1 ? E : i; // expected-warning {{warn-sign-conversion.cpp:16:3>' to 'int'}}
+    int e3a = 1 ? E : B; // expected-warning {{operand of ? changes signedness: 'test1::<anonymous enum at }}
+    int e3b = 1 ? E : B; // expected-warning {{warn-sign-conversion.cpp:16:3>' to 'int'}}
+    int e4a = 1 ? B : E; // expected-warning {{operand of ? changes signedness: 'test1::<anonymous enum at }}
+    int e4b = 1 ? B : E; // expected-warning {{warn-sign-conversion.cpp:16:3>' to 'int'}}
+  }
+}
+
+// namespace for named enums tests
+namespace test2 {
+  enum Named1 { A };
+  enum Named2 { B = -1 };
+
+  template <typename T> struct Foo {
+    enum Named3 { C };
+    enum Named4 { D = ~0U };
+  };
+
+  enum Named5 { E = ~0U };
+
+  void doit_anonymous( int i ) {
+    int a1 = 1 ? i : A;
+    int a2 = 1 ? A : i;
+
+    int b1 = 1 ? i : B;
+    int b2 = 1 ? B : i;
+
+    int c1 = 1 ? i : Foo<bool>::C;
+    int c2 = 1 ? Foo<bool>::C : i;
+
+    int d1 = 1 ? i : Foo<bool>::D; // expected-warning {{operand of ? changes signedness: 'test2::Foo<bool>::Named4' to 'int'}}
+    int d2 = 1 ? Foo<bool>::D : i; // expected-warning {{operand of ? changes signedness: 'test2::Foo<bool>::Named4' to 'int'}}
+    int d3 = 1 ? B : Foo<bool>::D; // expected-warning {{operand of ? changes signedness: 'test2::Foo<bool>::Named4' to 'int'}}
+    int d4 = 1 ? Foo<bool>::D : B; // expected-warning {{operand of ? changes signedness: 'test2::Foo<bool>::Named4' to 'int'}}
+
+    int e1 = 1 ? i : E; // expected-warning {{operand of ? changes signedness: 'test2::Named5' to 'int'}}
+    int e2 = 1 ? E : i; // expected-warning {{operand of ? changes signedness: 'test2::Named5' to 'int'}}
+    int e3 = 1 ? E : B; // expected-warning {{operand of ? changes signedness: 'test2::Named5' to 'int'}}
+    int e4 = 1 ? B : E; // expected-warning {{operand of ? changes signedness: 'test2::Named5' to 'int'}}
+  }
+}