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internal/lib/reflect: fix Int/Uint/Float flagIndir

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This commit is contained in:
visualfc
2024-12-13 11:04:19 +08:00
parent 0c2f6c46f6
commit d2d8bd550a
2 changed files with 26 additions and 22 deletions
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4
runtime/internal/lib/internal/bytealg/bytealg.go
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@@ -64,14 +64,14 @@ func CountString(s string, c byte) (n int) {
// Requires 2 <= len(b) <= MaxLen. // Requires 2 <= len(b) <= MaxLen.
func Index(a, b []byte) int { func Index(a, b []byte) int {
for i := 0; i <= len(a)-len(b); i++ { for i := 0; i <= len(a)-len(b); i++ {
if equal(a[i:i+len(b)], b) { if Equal(a[i:i+len(b)], b) {
return i return i
} }
} }
return -1 return -1
} }
func equal(a, b []byte) bool { func Equal(a, b []byte) bool {
if n := len(a); n == len(b) { if n := len(a); n == len(b) {
return c.Memcmp(unsafe.Pointer(unsafe.SliceData(a)), unsafe.Pointer(unsafe.SliceData(b)), uintptr(n)) == 0 return c.Memcmp(unsafe.Pointer(unsafe.SliceData(a)), unsafe.Pointer(unsafe.SliceData(b)), uintptr(n)) == 0
} }

44
runtime/internal/lib/reflect/value.go
View File

@@ -623,7 +623,7 @@ func (v Value) CanFloat() bool {
// It panics if v's Kind is not Float32 or Float64 // It panics if v's Kind is not Float32 or Float64
func (v Value) Float() float64 { func (v Value) Float() float64 {
k := v.kind() k := v.kind()
if v.flag&flagAddr != 0 { if v.flag&flagIndir != 0 {
switch k { switch k {
case Float32: case Float32:
return float64(*(*float32)(v.ptr)) return float64(*(*float32)(v.ptr))
@@ -635,7 +635,11 @@ func (v Value) Float() float64 {
case Float32: case Float32:
return float64(bitcast.ToFloat32(uintptr(v.ptr))) return float64(bitcast.ToFloat32(uintptr(v.ptr)))
case Float64: case Float64:
return bitcast.ToFloat64(uintptr(v.ptr)) if is64bit {
return bitcast.ToFloat64(uintptr(v.ptr))
} else {
return *(*float64)(v.ptr)
}
} }
} }
panic(&ValueError{"reflect.Value.Float", v.kind()}) panic(&ValueError{"reflect.Value.Float", v.kind()})
@@ -705,7 +709,7 @@ func (v Value) Int() int64 {
f := v.flag f := v.flag
k := f.kind() k := f.kind()
p := v.ptr p := v.ptr
if f&flagAddr != 0 { if f&flagIndir != 0 {
switch k { switch k {
case Int: case Int:
return int64(*(*int)(p)) return int64(*(*int)(p))
@@ -718,16 +722,16 @@ func (v Value) Int() int64 {
case Int64: case Int64:
return *(*int64)(p) return *(*int64)(p)
} }
} else if unsafe.Sizeof(uintptr(0)) == 8 {
if k >= Int && k <= Int64 {
return int64(uintptr(p))
}
} else { } else {
if k >= Int && k <= Int32 { switch k {
case Int, Int8, Int16, Int32:
return int64(uintptr(p)) return int64(uintptr(p))
} case Int64:
if k == Int64 { if is64bit {
return *(*int64)(p) return int64(uintptr(p))
} else {
return *(*int64)(p)
}
} }
} }
panic(&ValueError{"reflect.Value.Int", v.kind()}) panic(&ValueError{"reflect.Value.Int", v.kind()})
@@ -1558,7 +1562,7 @@ func (v Value) Uint() uint64 {
f := v.flag f := v.flag
k := v.kind() k := v.kind()
p := v.ptr p := v.ptr
if f&flagAddr != 0 { if f&flagIndir != 0 {
switch k { switch k {
case Uint: case Uint:
return uint64(*(*uint)(p)) return uint64(*(*uint)(p))
@@ -1573,16 +1577,16 @@ func (v Value) Uint() uint64 {
case Uintptr: case Uintptr:
return uint64(*(*uintptr)(p)) return uint64(*(*uintptr)(p))
} }
} else if unsafe.Sizeof(uintptr(0)) == 8 {
if k >= Uint && k <= Uintptr {
return uint64(uintptr(p))
}
} else { } else {
if k >= Uint && k <= Uint32 { switch k {
case Uint, Uint8, Uint16, Uint32:
return uint64(uintptr(p)) return uint64(uintptr(p))
} case Uint64, Uintptr:
if k == Uint64 || k == Uintptr { if is64bit {
return *(*uint64)(p) return uint64(uintptr(p))
} else {
return *(*uint64)(p)
}
} }
} }
panic(&ValueError{"reflect.Value.Uint", v.kind()}) panic(&ValueError{"reflect.Value.Uint", v.kind()})