mirror of
https://github.com/golang/go
synced 2024-11-19 04:04:47 -07:00
6b75c15eec
(Elminate premature abstraction.) The test probes used Pointer!=nil for the "is pointerlike" predicate. Now that Pointer is a struct, they check the type of the expression, which is more accurate. Two probes on non-pointerlike values have beem removed. R=crawshaw CC=golang-dev https://golang.org/cl/38420043
101 lines
2.0 KiB
Go
101 lines
2.0 KiB
Go
// +build ignore
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package main
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var unknown bool // defeat dead-code elimination
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var p, q int
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type A struct {
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f *int
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g interface{}
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}
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func (a A) m1() {
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print(a.f) // @pointsto main.p
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}
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func (a *A) m2() {
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print(a) // @pointsto complit.A@struct1s:9
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print(a.f) // @pointsto main.p
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}
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type B struct {
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h *int
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A
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}
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func structs1() {
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b := &B{ // @line struct1s
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h: &q,
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}
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b.f = &p
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b.g = b
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print(b.h) // @pointsto main.q
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print(b.f) // @pointsto main.p
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print(b.g) // @types *B
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ptr := &b.f
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print(*ptr) // @pointsto main.p
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b.m1()
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b.m2()
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}
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// @calls main.structs1 -> (main.A).m1
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// @calls main.structs1 -> (*main.A).m2
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// @calls (*main.B).m1 -> (main.A).m1
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// @calls (*main.B).m2 -> (*main.A).m2
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type T struct {
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x int
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y int
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}
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type S struct {
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a [3]T
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b *[3]T
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c [3]*T
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}
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func structs2() {
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var s S // @line s2s
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print(&s) // @pointsto s@s2s:6
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print(&s.a) // @pointsto s.a@s2s:6
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print(&s.a[0]) // @pointsto s.a[*]@s2s:6
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print(&s.a[0].x) // @pointsto s.a[*].x@s2s:6
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print(&s.a[0].y) // @pointsto s.a[*].y@s2s:6
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print(&s.b) // @pointsto s.b@s2s:6
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print(&s.b[0]) // @pointsto
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print(&s.b[0].x) // @pointsto
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print(&s.b[0].y) // @pointsto
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print(&s.c) // @pointsto s.c@s2s:6
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print(&s.c[0]) // @pointsto s.c[*]@s2s:6
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print(&s.c[0].x) // @pointsto
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print(&s.c[0].y) // @pointsto
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var s2 S // @line s2s2
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s2.b = new([3]T) // @line s2s2b
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print(s2.b) // @pointsto new@s2s2b:12
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print(&s2.b) // @pointsto s2.b@s2s2:6
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print(&s2.b[0]) // @pointsto new[*]@s2s2b:12
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print(&s2.b[0].x) // @pointsto new[*].x@s2s2b:12
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print(&s2.b[0].y) // @pointsto new[*].y@s2s2b:12
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print(&s2.c[0].x) // @pointsto
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print(&s2.c[0].y) // @pointsto
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var s3 S // @line s2s3
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s3.c[2] = new(T) // @line s2s3c
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print(&s3.c) // @pointsto s3.c@s2s3:6
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print(s3.c[1]) // @pointsto new@s2s3c:15
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print(&s3.c[1]) // @pointsto s3.c[*]@s2s3:6
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print(&s3.c[1].x) // @pointsto new.x@s2s3c:15
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print(&s3.c[1].y) // @pointsto new.y@s2s3c:15
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}
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func main() {
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structs1()
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structs2()
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}
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