language-servers/roc
1
0
Fork 0
mirror of https://github.com/roc-lang/roc.git synced 2025-09-29 23:04:49 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 7

work around allocation of size 0

Browse source
This commit is contained in:
Folkert 2023-03-06 21:12:04 +01:00
parent 53db40e2f4
commit 86671d659c
No known key found for this signature in database
GPG key ID: 1F17F6FFD112B97C
1 changed files with 19 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

28
examples/cli/false-interpreter/platform/src/lib.rs
View file

@ -134,17 +134,27 @@ pub extern "C" fn rust_main() -> i32 {
unsafe fn call_the_closure(closure_data_ptr: *const u8) -> i64 {
let size = size_Fx_result() as usize;
let layout = Layout::array::<u8>(size).unwrap();
let buffer = std::alloc::alloc(layout) as *mut u8;
call_Fx(
// This flags pointer will never get dereferenced
MaybeUninit::uninit().as_ptr(),
closure_data_ptr as *const u8,
buffer as *mut u8,
);
if size == 0 {
call_Fx(
// This flags pointer will never get dereferenced
MaybeUninit::uninit().as_ptr(),
closure_data_ptr as *const u8,
std::ptr::null_mut(),
);
} else {
let layout = Layout::array::<u8>(size).unwrap();
let buffer = std::alloc::alloc(layout) as *mut u8;
std::alloc::dealloc(buffer, layout);
call_Fx(
// This flags pointer will never get dereferenced
MaybeUninit::uninit().as_ptr(),
closure_data_ptr as *const u8,
buffer as *mut u8,
);
std::alloc::dealloc(buffer, layout);
}
0
}