Pattern: Misuse of unsafe.Pointer
Issue: -
This issue reports likely incorrect uses of unsafe.Pointer to convert integers to pointers. A conversion from uintptr to unsafe.Pointer is invalid if it implies that there is a uintptr-typed word in memory that holds a pointer value, because
that word will be invisible to stack copying and to the garbage collector.
Example of incorrect code:
func test() {
var y uintptr
x = unsafe.Pointer(y) // possible misuse of unsafe.Pointer
}It is safe if x is itself derived directly from an unsafe.Pointer via conversion and pointer arithmetic or if x is the result of reflect.Value.Pointer or reflect.Value.UnsafeAddr or obtained from the Data field of a *reflect.SliceHeader or *reflect.StringHeader.
Pointer allows a program to defeat the type system and read and write arbitrary memory. It should be used with extreme care.