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fix:correct Sizeof to align size properly

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luoliwoshang
2024-07-11 18:06:41 +08:00
parent aedaf57249
commit 88cfeb2791
1 changed files with 5 additions and 1 deletions
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6
ssa/type.go
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@@ -114,7 +114,7 @@ func (p *goProgram) Offsetsof(fields []*types.Var) (ret []int64) {
func (p *goProgram) Sizeof(T types.Type) int64 { func (p *goProgram) Sizeof(T types.Type) int64 {
prog := Program(p) prog := Program(p)
ptrSize := int64(prog.PointerSize()) ptrSize := int64(prog.PointerSize())
return prog.sizes.Sizeof(T) + extraSize(T, ptrSize) return align((prog.sizes.Sizeof(T) + extraSize(T, ptrSize)), prog.sizes.Alignof(T))
} }
func extraSize(t types.Type, ptrSize int64) (ret int64) { func extraSize(t types.Type, ptrSize int64) (ret int64) {
@@ -134,6 +134,10 @@ func extraSize(t types.Type, ptrSize int64) (ret int64) {
return 0 return 0
} }
func align(x, a int64) int64 {
return (x + a - 1) &^ (a - 1)
}
// ----------------------------------------------------------------------------- // -----------------------------------------------------------------------------
type rawType struct { type rawType struct {