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fix bool tests

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This commit is contained in:
Folkert 2020-09-30 21:49:33 +02:00
parent f3b317cab6
commit d46fb7bfb6
2 changed files with 96 additions and 19 deletions
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30
roc_std/src/lib.rs
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@ -126,12 +126,18 @@ impl<T> RocList<T> {
let ptr = slice.as_ptr();
let element_bytes = capacity * core::mem::size_of::<T>();
let num_bytes = core::mem::size_of::<usize>() + element_bytes;
// we must round up to the nearest multiple of 16
// otherwise we get segfault / double free issues
let padding = 16 - (num_bytes % 16);
let num_bytes = num_bytes + padding;
let padding = {
if core::mem::align_of::<T>() <= core::mem::align_of::<usize>() {
// aligned on usize (8 bytes on 64-bit systems)
0
} else {
// aligned on 2*usize (16 bytes on 64-bit systems)
core::mem::size_of::<usize>()
}
};
let num_bytes = core::mem::size_of::<usize>() + padding + element_bytes;
let elements = unsafe {
let raw_ptr = libc::malloc(num_bytes);
@ -142,11 +148,15 @@ impl<T> RocList<T> {
let raw_ptr = Self::get_element_ptr(raw_ptr as *mut T);
libc::memcpy(
raw_ptr as *mut libc::c_void,
ptr as *mut libc::c_void,
num_bytes,
);
{
// NOTE: using a memcpy here causes weird issues
let target_ptr = raw_ptr as *mut T;
let source_ptr = ptr as *const T;
let length = slice.len() as isize;
for index in 0..length {
*target_ptr.offset(index) = *source_ptr.offset(index);
}
}
raw_ptr as *mut T
};