From: Nick Lewycky <nicholas@mxc.ca>
Date: Thu, 24 Jan 2013 02:03:08 +0000 (+0000)
Subject: Start checking nonnull (as well as format and argument_with_type_tag) on
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=9b7ea0d2cc86c949ed70ad810f51ff34c7ce2f83;p=clang

Start checking nonnull (as well as format and argument_with_type_tag) on
overloaded binary operators.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173315 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Sema/SemaOverload.cpp b/lib/Sema/SemaOverload.cpp
index 91d02dacc8..e1c3d6839d 100644
--- a/lib/Sema/SemaOverload.cpp
+++ b/lib/Sema/SemaOverload.cpp
@@ -10336,6 +10336,13 @@ Sema::CreateOverloadedBinOp(SourceLocation OpLoc,
                                 FnDecl))
           return ExprError();
 
+        ArrayRef<const Expr *> ArgsArray(Args, 2);
+        // Cut off the implicit 'this'.
+        if (isa<CXXMethodDecl>(FnDecl))
+          ArgsArray = ArgsArray.slice(1);
+        checkCall(FnDecl, ArgsArray, 0, isa<CXXMethodDecl>(FnDecl), OpLoc, 
+                  TheCall->getSourceRange(), VariadicDoesNotApply);
+
         return MaybeBindToTemporary(TheCall);
       } else {
         // We matched a built-in operator. Convert the arguments, then
diff --git a/test/SemaCXX/attr-nonnull.cpp b/test/SemaCXX/attr-nonnull.cpp
index 76e1b74068..8af49d9d29 100644
--- a/test/SemaCXX/attr-nonnull.cpp
+++ b/test/SemaCXX/attr-nonnull.cpp
@@ -40,3 +40,15 @@ void g() {
   f(static_cast<char*>(0));  // expected-warning{{null passed}}
 }
 }
+
+namespace test4 {
+struct X {
+  bool operator!=(const void *) const __attribute__((nonnull(2)));
+};
+bool operator==(const X&, const void *) __attribute__((nonnull(2)));
+
+void test(const X& x) {
+  (void)(x == 0);  // expected-warning{{null passed}}
+  (void)(x != 0);  // expected-warning{{null passed}}
+}
+}