On Sunday, 10 October 2021 at 10:44:15 UTC, rempas wrote:
I'm having the following C code:
```
static void* (*ppmalloc)(size_t) = malloc;
static void (*ppfree)(void*) = free;
```
I want to covert this code in D so I try to do the following:
```
static void* function(size_t)*ppmalloc = malloc;
static void function(void*)*ppfree = free;
```
If I do that, I'm getting the following error message:
```
Error: function `core.stdc.stdlib.malloc(ulong size)` is not
callable using argument types `()`
```
I'm also trying to do the same using "pureMalloc" and
"pureFree" instead but this time I'm getting the following
error:
```
cannot implicitly convert expression `pureMalloc()(size_t
size)` of type `void` to `extern (C) void* function(ulong)*`
```
Any ideas?
Hello rempas.
This is the way:
```d
import core.stdc.stdlib : malloc, free;
extern(C) void* function(ulong) mallocPointer = &malloc;
extern(C) void function(void*) freePointer = &free;
```
`function` in the type is already a function pointer. Not
immediately obvious though: You also must annotate the type with
`extern(C)` otherwise it will not work.
