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Code Issues Releases Activity

'Stack Memory' slide isn't really showing stack memory (#996)

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Dominik Maier 2023-07-18 07:35:20 +02:00 committed by GitHub
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src/memory-management/stack.md
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@ -1,7 +1,7 @@
# Stack Memory # Stack and Heap Example
Creating a `String` puts fixed-sized data on the stack and dynamically sized Creating a `String` puts fixed-sized metadata on the stack and dynamically sized
data on the heap: data, the actual string, on the heap:
```rust,editable ```rust,editable
fn main() { fn main() {
@ -40,7 +40,7 @@ fn main() {
// String provides no guarantees about its layout, so this could lead to // String provides no guarantees about its layout, so this could lead to
// undefined behavior. // undefined behavior.
unsafe { unsafe {
let (capacity, ptr, len): (usize, usize, usize) = std::mem::transmute(s1); let (ptr, capacity, len): (usize, usize, usize) = std::mem::transmute(s1);
println!("ptr = {ptr:#x}, len = {len}, capacity = {capacity}"); println!("ptr = {ptr:#x}, len = {len}, capacity = {capacity}");
} }
} }