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aligns as usize

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Mattthew Heath 2024-12-06 17:16:24 +00:00
parent e65460b0bf
commit b33f1b0981
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1 changed files with 6 additions and 3 deletions
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9
crates/compiler/builtins/bitcode/src/utils.zig
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@ -74,10 +74,13 @@ comptime {
}
}
fn testing_roc_alloc(size: usize, _: u32) callconv(.C) ?*anyopaque {
fn testing_roc_alloc(size: usize, alignment: u32) callconv(.C) ?*anyopaque {
if (alignment > @alignOf(usize)) {
@panic("alignments larger than that of usize are not currently supported");
}
// We store an extra usize which is the size of the full allocation.
const full_size = size + @sizeOf(usize);
var raw_ptr = (std.testing.allocator.alloc(u8, full_size) catch unreachable).ptr;
var raw_ptr = (std.testing.allocator.alignedAlloc(u8, @alignOf(usize), full_size) catch unreachable).ptr;
@as([*]usize, @alignCast(@ptrCast(raw_ptr)))[0] = full_size;
raw_ptr += @sizeOf(usize);
const ptr = @as(?*anyopaque, @ptrCast(raw_ptr));
@ -107,7 +110,7 @@ fn testing_roc_realloc(c_ptr: *anyopaque, new_size: usize, old_size: usize, _: u
}
fn testing_roc_dealloc(c_ptr: *anyopaque, _: u32) callconv(.C) void {
const raw_ptr = @as([*]u8, @ptrCast(c_ptr)) - @sizeOf(usize);
const raw_ptr = @as([*]align(@alignOf(usize)) u8, @alignCast(@ptrCast(c_ptr))) - @sizeOf(usize);
const full_size = @as([*]usize, @alignCast(@ptrCast(raw_ptr)))[0];
const slice = raw_ptr[0..full_size];