realloc in alloc::alloc - Rust
Description: Reallocates memory with the global allocator.

## realloc

# Function realloc

1.36.0 · Source

    pub unsafe fn realloc(ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8

Expand description

Reallocates memory with the global allocator.

This function forwards calls to the `GlobalAlloc::realloc` method of the allocator registered with the `#[global_allocator]` attribute if there is one, or the `std` crate’s default.

This function is expected to be deprecated in favor of the `grow` and `shrink` methods of the `Global` type when it and the `Allocator` trait become stable.

## §Safety

See `GlobalAlloc::realloc`.