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mem: Check if alignment matches on Small_Stack resize

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Feoramund
2025-06-15 12:34:15 -04:00
parent 3a02918efc
commit aa41a77fc4
1 changed files with 10 additions and 0 deletions
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core/mem/allocators.odin
+10
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@@ -1550,6 +1550,16 @@ small_stack_resize_bytes_non_zeroed :: proc(
// NOTE(bill): Treat as a double free // NOTE(bill): Treat as a double free
return nil, nil return nil, nil
} }
if uintptr(old_memory) & uintptr(alignment-1) != 0 {
// A different alignment has been requested and the current address
// does not satisfy it.
data, err := small_stack_alloc_bytes_non_zeroed(s, size, alignment, loc)
if err == nil {
runtime.copy(data, byte_slice(old_memory, old_size))
sanitizer.address_poison(old_memory)
}
return data, err
}
if old_size == size { if old_size == size {
result := byte_slice(old_memory, size) result := byte_slice(old_memory, size)
sanitizer.address_unpoison(result) sanitizer.address_unpoison(result)