# V2580\. MISRA\. The 'restrict' specifier should not be used\.

This diagnostic is based on the [MISRA](https://www.misra.org.uk/) \(Motor Industry Software Reliability Association\) software development guide\.

This rule only applies to programs written in C\. The 'restrict' specifier is prohibited in variable declarations, functions' formal parameters, and structure/union fields\. Although the compiler may be able to generate better\-optimized code, using the 'restrict' specifier may lead to errors if two or more pointers refer to the same memory area\.

Below is a code sample that triggers the analyzer's warnings:

```cpp
void my_memcpy(void * restrict dest,
               const void * restrict src,
               size_t bytes)
{
  // ...
}

typedef struct
{
   void * restrict m_field;
} MyStruct;
```



```cpp
```