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std.heap.SmpAllocator: fix using wrong size class indices

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This commit is contained in:
Andrew Kelley 2025-02-07 00:47:43 -08:00
parent 839c453d88
commit 1ffae59fec
1 changed files with 4 additions and 6 deletions
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10
lib/std/heap/SmpAllocator.zig
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@ -215,13 +215,11 @@ fn free(context: *anyopaque, memory: []u8, alignment: mem.Alignment, ra: usize)
fn sizeClassIndex(len: usize, alignment: mem.Alignment) usize {
return @max(
@bitSizeOf(usize) - @clz(len - 1),
@intFromEnum(alignment),
min_class,
);
@bitSizeOf(usize) - @clz(len + (@sizeOf(usize) - 1)),
@intFromEnum(alignment) + 1,
) - min_class;
}
fn slotSize(class: usize) usize {
const Log2USize = std.math.Log2Int(usize);
return @as(usize, 1) << @as(Log2USize, @intCast(class));
return @as(usize, 1) << @intCast(class + min_class);
}