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Ensure arena alignment.

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Nuno Cruces
2024-01-13 21:24:02 +00:00
parent 145bc228af
commit 3d99af86bf
1 changed files with 8 additions and 0 deletions
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8
sqlite.go
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@@ -216,6 +216,8 @@ func (sqlt *sqlite) newString(s string) uint32 {
}
func (sqlt *sqlite) newArena(size uint64) arena {
// Ensure the arena's size is a multiple of 8.
size = (size + 7) &^ 7
return arena{
sqlt: sqlt,
size: uint32(size),
@@ -255,6 +257,12 @@ func (a *arena) mark() (reset func()) {
}
func (a *arena) new(size uint64) uint32 {
// Align the next address, to 4 or 8 bytes.
if size&7 != 0 {
a.next = (a.next + 3) &^ 3
} else {
a.next = (a.next + 7) &^ 7
}
if size <= uint64(a.size-a.next) {
ptr := a.base + a.next
a.next += uint32(size)