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common: make Array.slice() helper safer

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This commit is contained in:
Isaac Freund
2022-07-11 23:33:34 +02:00
parent c09f4d631b
commit f64abbd016
1 changed files with 2 additions and 1 deletions
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src/common_core.zig
+2 -1
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@@ -34,7 +34,8 @@ pub const Array = extern struct {
pub fn slice(array: Array, comptime T: type) []T {
const data = array.data orelse return &[0]T{};
const ptr = @ptrCast([*]T, @alignCast(@alignOf(T), data));
// The wire protocol/libwayland only guarantee 32-bit word alignment.
const ptr = @ptrCast([*]T, @alignCast(4, data));
return ptr[0..@divExact(array.size, @sizeOf(T))];
}
};