Driver & AST: Implement support for -fpack-struct and -fpack-struct= command
line options.
 - <rdar://problem/10120602>, PR9631

llvm-svn: 141211
diff --git a/clang/test/Sema/fpack-struct.c b/clang/test/Sema/fpack-struct.c
new file mode 100644
index 0000000..37c8444
--- /dev/null
+++ b/clang/test/Sema/fpack-struct.c
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -DEXPECTED_STRUCT_SIZE=5 -fpack-struct 1 %s
+// RUN: %clang_cc1 -DEXPECTED_STRUCT_SIZE=6 -fpack-struct 2 %s
+
+struct s0 {
+       int x;
+       char c;
+};
+
+int t0[sizeof(struct s0) == EXPECTED_STRUCT_SIZE ?: -1];