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Avoid overlap issues when correcting memory after resize in _reserve_soa

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This commit is contained in:
Damian Tarnawski
2025-08-23 16:55:12 +02:00
parent 9d651348b5
commit 2a6dfd2545
2 changed files with 58 additions and 19 deletions
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tests/core/runtime/test_core_runtime.odin
+44 -14
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@@ -181,28 +181,58 @@ test_map_get :: proc(t: ^testing.T) {
@(test)
test_soa_array_allocator_resize :: proc(t: ^testing.T) {
arena: runtime.Arena
context.allocator = runtime.arena_allocator(&arena)
defer runtime.arena_destroy(&arena)
array, err := make(#soa[dynamic][2]int, 2, 3)
array[0] = [2]int{1, 2}
array[1] = [2]int{3, 4}
{
// |1 3 _ 2 4 _|
// |1 3 _ _ 2 4 _ _|
testing.expect_value(t, err, nil)
testing.expect_value(t, len(array), 2)
testing.expect_value(t, cap(array), 3)
array, err := make(#soa[dynamic][2]int, 2, 3)
array[0] = [2]int{1, 2}
array[1] = [2]int{3, 4}
err = resize(&array, 4)
testing.expect_value(t, err, nil)
testing.expect_value(t, len(array), 2)
testing.expect_value(t, cap(array), 3)
testing.expect_value(t, err, nil)
testing.expect_value(t, len(array), 4)
testing.expect_value(t, cap(array), 4)
err = resize(&array, 4)
testing.expect_value(t, array[0], [2]int{1, 2})
testing.expect_value(t, array[1], [2]int{3, 4})
testing.expect_value(t, array[2], [2]int{0, 0})
testing.expect_value(t, array[3], [2]int{0, 0})
testing.expect_value(t, err, nil)
testing.expect_value(t, len(array), 4)
testing.expect_value(t, cap(array), 4)
testing.expect_value(t, array[0], [2]int{1, 2})
testing.expect_value(t, array[1], [2]int{3, 4})
testing.expect_value(t, array[2], [2]int{0, 0})
testing.expect_value(t, array[3], [2]int{0, 0})
}
{
// |1 4 2 5 3 6|
// |1 4 _ _ 2 5 _ _ 3 6 _ _|
array, err := make(#soa[dynamic][3]int, 2, 2)
array[0] = [3]int{1, 2, 3}
array[1] = [3]int{4, 5, 6}
testing.expect_value(t, err, nil)
testing.expect_value(t, len(array), 2)
testing.expect_value(t, cap(array), 2)
err = resize(&array, 4)
testing.expect_value(t, err, nil)
testing.expect_value(t, len(array), 4)
testing.expect_value(t, cap(array), 4)
testing.expect_value(t, array[0], [3]int{1, 2, 3})
testing.expect_value(t, array[1], [3]int{4, 5, 6})
testing.expect_value(t, array[2], [3]int{0, 0, 0})
testing.expect_value(t, array[3], [3]int{0, 0, 0})
}
}
@(test)