Fix 2145 improve links, add example

Author: Colin Robertson

docs/code-quality/c26485.md

@@ -8,8 +8,35 @@ ms.assetid: 8915ad2d-7fd6-4bbc-abe4-0b3292ea2170
 ---
 # C26485 NO_ARRAY_TO_POINTER_DECAY
 
-Like C26481, this check helps to enforce the rule I.13: *Do not pass an array as a single pointer* by detecting places where static array type information gets lost due to decay to a raw pointer. zstring and czstring types are not excluded.
+> warning C26485: Expression '*array-name*': No array to pointer decay (bounds.3).
 
 ## Remarks
 
-C26481 and C26485 come from the [Bounds Safety Profile](https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md) rules implemented in the first release of the C++ Core Guidelines Checker. They are applicable to raw pointers category since they help to avoid unsafe use of raw pointers.
+Like [C26481](c26481.md), this check helps to enforce the [C++ Core Guidelines](https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md) rule [I.13](https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#Ri-array): *Do not pass an array as a single pointer* by detecting places where static array type information gets lost due to decay to a raw pointer. `zstring` and `czstring` types are not excluded.
+
+C26481 and C26485 come from the [Bounds Safety Profile](https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#SS-bounds) rules implemented in the first release of the C++ Core Guidelines Checker. They are applicable to the raw pointers category since they help to avoid unsafe use of raw pointers.
+
+## Example
+
+This sample results in two warnings for array to pointer decay in the call to `memcpy`.
+
+```cpp
+// c26485_bad.cpp
+// compile using:
+// set Esp.Extensions=CppCoreCheck.dll
+// cl /W4 /EHsc /permissive- /analyze /analyze:plugin EspXEngine.dll /analyze:ruleset "%VSINSTALLDIR%\Team Tools\Static Analysis Tools\Rule Sets\CppCoreCheckBoundsRules.ruleset" c26485_bad.cpp
+#include <cstring>
+constexpr int array_length = 10;
+
+int main() noexcept
+{
+    int const from_array[array_length] = { 4, 3, 2, 1, 0, 9, 8, 7, 6, 5 };
+    int to_array[array_length] = {};
+
+    if (nullptr != memcpy(to_array, from_array, sizeof(int) * array_length))
+        return 0;
+    return 1;
+}
+```
+
+To address this issue, avoid calls that take pointer parameters, but don't manage bounds information. Use of such functions is often error-prone. Prefer C++ standard library calls to C runtime functions. An explicit cast to the decayed pointer type prevents the warning, but it doesn't prevent buggy code.