explictly call make new cause space in heap?

[xie cui]

when i call make new explictly, does it mean the space must be in heap, in my mind, it still has chance to alloc in stack in some situation?

my question is is it must be in heap, or in some case it can alloc in stack?

[Ian Lance Taylor]

On Fri, Jan 29, 2021 at 9:10 AM xie cui <cuiw...@gmail.com> wrote:
>
> when i call make new explictly, does it mean the space must be in heap, in my mind, it still has chance to alloc in stack in some situation?
> my question is is it must be in heap, or in some case it can alloc in stack?

The builtin function new can return the address of a stack value in some cases.

Writing
p := new(T)
is approximately the same as writing
var unnamedVariable T
p := &unnamedVariable

Whether the new variable is created on the stack or the heap depends
on the compiler's escape analysis of p.

Ian