Disabled 'is_palindrome' for 'const char*'

Author: zamazan4ik

doc/is_palindrome.qbk

@@ -79,6 +79,8 @@ All of the variants of `is_palindrome` take their parameters by value or const r
 
 * If you use version of 'is_palindrome' without custom predicate, 'is_palindrome' uses default 'operator==' for elements. If you want use custom predicate, you must redefine 'operator=='.
 
+* Don't use 'const char*' with 'is_palindrome', because 'const char*' is always non-palindromic ('\0' at the end). If you will try to compile 'is_palindrome' with 'const char*', you will get an error.
+
 [endsect]
 
 [/ File is_palindrome.qbk

include/boost/algorithm/is_palindrome.hpp

@@ -102,6 +102,22 @@ bool is_palindrome(const R& range, Predicate p)
     return is_palindrome(boost::begin(range), boost::end(range), p);
 }
 
+//Disable is_palindrome for const char* because it work not properly.
+//Please use string_view for const char* cases.
+//Here we use dirty hack to disable 'is_palindrome' with 'const char*'
+//URL: http://stackoverflow.com/questions/14637356/static-assert-fails-compilation-even-though-template-function-is-called-nowhere
+template<typename T>
+struct foobar : std::false_type
+{ };
+
+template<typename T = int>
+bool is_palindrome(const char* str)
+{
+    static_assert(foobar<T>::value, "Using 'is_palindrome' for 'const char*' is dangerous, because result is always false"
+                         "(reason: '\0' in the end of the string). You can use string_view in this case");
+    return false;
+}
+
 }}
 
 #endif // BOOST_ALGORITHM_IS_PALINDROME_HPP