Vendor import of clang trunk r130700:

http://llvm.org/svn/llvm-project/cfe/trunk@130700

1 files changed, 63 insertions, 0 deletions

diff --git a/test/SemaCXX/warn-non-pod-memset.cpp b/test/SemaCXX/warn-non-pod-memset.cpp
new file mode 100644
index 0000000..fbdcead
--- /dev/null
+++ b/test/SemaCXX/warn-non-pod-memset.cpp
@@ -0,0 +1,63 @@
+// RUN: %clang_cc1 -fsyntax-only -Wnon-pod-memset -verify %s
+
+extern void *memset(void *, int, unsigned);
+
+// Several POD types that should not warn.
+struct S1 {} s1;
+struct S2 { int x; } s2;
+struct S3 { float x, y; S1 s[4]; void (*f)(S1**); } s3;
+
+// We use the C++11 concept of POD for this warning, so ensure a non-aggregate
+// still warns.
+class C1 {
+  int x, y, z;
+public:
+  void foo() {}
+} c1;
+
+// Non-POD types that should warn.
+struct X1 { X1(); } x1;
+struct X2 { ~X2(); } x2;
+struct X3 { virtual void f(); } x3;
+struct X4 : X2 {} x4;
+struct X5 : virtual S1 {} x5;
+
+void test_warn() {
+  memset(&x1, 0, sizeof x1); // \
+      // expected-warning {{destination for this memset call is a pointer to a non-POD type}} \
+      // expected-note {{explicitly cast the pointer to silence this warning}}
+  memset(&x2, 0, sizeof x2); // \
+      // expected-warning {{destination for this memset call is a pointer to a non-POD type}} \
+      // expected-note {{explicitly cast the pointer to silence this warning}}
+  memset(&x3, 0, sizeof x3); // \
+      // expected-warning {{destination for this memset call is a pointer to a non-POD type}} \
+      // expected-note {{explicitly cast the pointer to silence this warning}}
+  memset(&x4, 0, sizeof x4); // \
+      // expected-warning {{destination for this memset call is a pointer to a non-POD type}} \
+      // expected-note {{explicitly cast the pointer to silence this warning}}
+  memset(&x5, 0, sizeof x5); // \
+      // expected-warning {{destination for this memset call is a pointer to a non-POD type}} \
+      // expected-note {{explicitly cast the pointer to silence this warning}}
+}
+
+void test_nowarn(void *void_ptr) {
+  int i, *iptr;
+  float y;
+  char c;
+
+  memset(&i, 0, sizeof i);
+  memset(&iptr, 0, sizeof iptr);
+  memset(&y, 0, sizeof y);
+  memset(&c, 0, sizeof c);
+  memset(void_ptr, 0, 42);
+  memset(&s1, 0, sizeof s1);
+  memset(&s2, 0, sizeof s2);
+  memset(&s3, 0, sizeof s3);
+  memset(&c1, 0, sizeof c1);
+
+  // Unevaluated code shouldn't warn.
+  (void)sizeof memset(&x1, 0, sizeof x1);
+
+  // Dead code shouldn't warn.
+  if (false) memset(&x1, 0, sizeof x1);
+}