isPointerDeref: Return false for function declarations

Author: danmar

lib/checknullpointer.cpp

@@ -166,6 +166,9 @@ bool CheckNullPointer::isPointerDeRef(const Token *tok, bool &unknown, const Set
         }
     }
 
+    if (tok->str() == "(" && !tok->scope()->isExecutable())
+        return false;
+
     const Token* parent = tok->astParent();
     if (!parent)
         return false;

test/testnullpointer.cpp

@@ -116,6 +116,7 @@ class TestNullPointer : public TestFixture {
         TEST_CASE(ticket6505);
         TEST_CASE(subtract);
         TEST_CASE(addNull);
+        TEST_CASE(isPointerDeRefFunctionDecl);
 
         TEST_CASE(ctu);
     }
@@ -3053,6 +3054,11 @@ class TestNullPointer : public TestFixture {
         ASSERT_EQUALS("", errout.str());
     }
 
+    void isPointerDeRefFunctionDecl() {
+        check("const char** get() { return 0; }");
+        ASSERT_EQUALS("", errout.str());
+    }
+
     void ctu(const char code[]) {
         // Clear the error buffer..
         errout.str("");