1 files changed, 45 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/warn-cast-align.cpp b/clang/test/SemaCXX/warn-cast-align.cpp
new file mode 100644
index 0000000..68acbdd
--- /dev/null
+++ b/clang/test/SemaCXX/warn-cast-align.cpp
@@ -0,0 +1,45 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -Wcast-align -verify %s
+
+// Simple casts.
+void test0(char *P) {
+  char *a; short *b; int *c;
+
+  a = (char*) P;
+  a = static_cast<char*>(P);
+  a = reinterpret_cast<char*>(P);
+  typedef char *CharPtr;
+  a = CharPtr(P);
+
+  b = (short*) P; // expected-warning {{cast from 'char *' to 'short *' increases required alignment from 1 to 2}}
+  b = reinterpret_cast<short*>(P);
+  typedef short *ShortPtr;
+  b = ShortPtr(P); // expected-warning {{cast from 'char *' to 'ShortPtr' (aka 'short *') increases required alignment from 1 to 2}}
+
+  c = (int*) P; // expected-warning {{cast from 'char *' to 'int *' increases required alignment from 1 to 4}}
+  c = reinterpret_cast<int*>(P);
+  typedef int *IntPtr;
+  c = IntPtr(P); // expected-warning {{cast from 'char *' to 'IntPtr' (aka 'int *') increases required alignment from 1 to 4}}
+}
+
+// Casts from void* are a special case.
+void test1(void *P) {
+  char *a; short *b; int *c;
+
+  a = (char*) P;
+  a = static_cast<char*>(P);
+  a = reinterpret_cast<char*>(P);
+  typedef char *CharPtr;
+  a = CharPtr(P);
+
+  b = (short*) P;
+  b = static_cast<short*>(P);
+  b = reinterpret_cast<short*>(P);
+  typedef short *ShortPtr;
+  b = ShortPtr(P);
+
+  c = (int*) P;
+  c = static_cast<int*>(P);
+  c = reinterpret_cast<int*>(P);
+  typedef int *IntPtr;
+  c = IntPtr(P);
+}