30 lines
922 B
Rust
30 lines
922 B
Rust
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//ignore-windows: Inspects allocation base address on Windows
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#![feature(allocator_api)]
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use std::alloc::{Global, Alloc, Layout, System};
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fn check_overalign_requests<T: Alloc>(mut allocator: T) {
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let size = 8;
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let align = 16; // greater than size
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let iterations = 1; // Miri is deterministic, no need to try many times
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unsafe {
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let pointers: Vec<_> = (0..iterations).map(|_| {
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allocator.alloc(Layout::from_size_align(size, align).unwrap()).unwrap()
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}).collect();
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for &ptr in &pointers {
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assert_eq!((ptr.as_ptr() as usize) % align, 0,
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"Got a pointer less aligned than requested")
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}
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// Clean up
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for &ptr in &pointers {
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allocator.dealloc(ptr, Layout::from_size_align(size, align).unwrap())
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}
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}
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}
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fn main() {
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check_overalign_requests(System);
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check_overalign_requests(Global);
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}
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