How Do I Copy a Go String to a C char Pointer Using CGO?

Copying a Go String to a C char Pointer in CGO

In Go, the CGO package facilitates communication between Go and C code. One common scenario is copying a Go string to a C char pointer.

To achieve this, the C.CString function must be utilized. This function allocates memory for the C string and returns a pointer to it. The syntax is as follows:

cstr = C.CString(str)

where str is the Go string and cstr is the C char pointer.

However, it's important to note that the memory allocated by C.CString must be manually released. To do this, you can use the following command:

C.free(unsafe.Pointer(cstr))

where cstr is the previously created C char pointer.

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