Support __attribute__(({con,de}structor)) in Parse & Sema
 - Including possible priority argument
 - In other news, the attribute parsing code really needs a cleanup


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54257 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/constructor-attribute.c b/test/Sema/constructor-attribute.c
new file mode 100644
index 0000000..3f240b0
--- /dev/null
+++ b/test/Sema/constructor-attribute.c
@@ -0,0 +1,15 @@
+// RUN: clang -fsyntax-only -verify %s
+
+int x __attribute__((constructor)); // expected-warning {{'constructor' attribute only applies to function types}}
+int f() __attribute__((constructor));
+int f() __attribute__((constructor(1)));
+int f() __attribute__((constructor(1,2))); // expected-error {{attribute requires 0 or 1 argument(s)}}
+int f() __attribute__((constructor(1.0))); // expected-error {{'constructor' attribute requires parameter 1 to be an integer constant}}
+
+int x __attribute__((destructor)); // expected-warning {{'destructor' attribute only applies to function types}}
+int f() __attribute__((destructor));
+int f() __attribute__((destructor(1)));
+int f() __attribute__((destructor(1,2))); // expected-error {{attribute requires 0 or 1 argument(s)}}
+int f() __attribute__((destructor(1.0))); // expected-error {{'destructor' attribute requires parameter 1 to be an integer constant}}
+
+