Diagnose missing sentinel argument on a funciton call
with sentinel attribute.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71778 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/function-sentinel-attr.c b/test/Sema/function-sentinel-attr.c
new file mode 100644
index 0000000..6630479
--- /dev/null
+++ b/test/Sema/function-sentinel-attr.c
@@ -0,0 +1,30 @@
+// RUN: clang-cc -fsyntax-only -verify %s
+
+#define NULL (void*)0
+
+#define ATTR __attribute__ ((__sentinel__))
+
+void foo1 (int x, ...) ATTR; // expected-note {{function has been explicitly marked sentinel here}}
+void foo5 (int x, ...) __attribute__ ((__sentinel__(1))); // expected-note {{function has been explicitly marked sentinel here}}
+void foo6 (int x, ...) __attribute__ ((__sentinel__(5))); // expected-note {{function has been explicitly marked sentinel here}}
+void foo7 (int x, ...) __attribute__ ((__sentinel__(0))); // expected-note {{function has been explicitly marked sentinel here}}
+void foo10 (int x, ...) __attribute__ ((__sentinel__(1,1)));
+void foo12 (int x, ... ) ATTR; // expected-note {{function has been explicitly marked sentinel here}}
+
+int main ()
+{
+
+ foo1(1, NULL); // OK
+ foo1(1, 0) ; // expected-warning {{missing sentinel in function call}}
+ foo5(1, NULL, 2); // OK
+ foo5(1,2,NULL, 1); // OK
+ foo5(1, NULL, 2, 1); // expected-warning {{missing sentinel in function call}}
+
+ foo6(1,2,3,4,5,6,7); // expected-warning {{missing sentinel in function call}}
+ foo6(1,NULL,3,4,5,6,7); // OK
+ foo7(1); // expected-warning {{not enough variable arguments in 'foo7' declaration to fit a sentinel}}
+ foo7(1, NULL); // OK
+
+ foo12(1); // expected-warning {{not enough variable arguments in 'foo12' declaration to fit a sentinel}}
+}
+