From 73df946d56c74384511a194dd01dbe099584fd1a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 15:14:23 +0200 Subject: Adding upstream version 1.16.10. Signed-off-by: Daniel Baumann --- test/escape_struct_param2.go | 298 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 298 insertions(+) create mode 100644 test/escape_struct_param2.go (limited to 'test/escape_struct_param2.go') diff --git a/test/escape_struct_param2.go b/test/escape_struct_param2.go new file mode 100644 index 0000000..946397e --- /dev/null +++ b/test/escape_struct_param2.go @@ -0,0 +1,298 @@ +// errorcheck -0 -m -l + +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Test escape analysis for struct function parameters. +// Note companion strict_param1 checks *struct function parameters with similar tests. + +package notmain + +var Ssink *string + +type U struct { + _sp *string + _spp **string +} + +type V struct { + _u U + _up *U + _upp **U +} + +func (u U) SP() *string { // ERROR "leaking param: u to result ~r0 level=0$" + return u._sp +} + +func (u U) SPP() **string { // ERROR "leaking param: u to result ~r0 level=0$" + return u._spp +} + +func (u U) SPPi() *string { // ERROR "leaking param: u to result ~r0 level=1$" + return *u._spp +} + +func tSPPi() { + s := "cat" // ERROR "moved to heap: s$" + ps := &s + pps := &ps + pu := &U{ps, pps} // ERROR "&U{...} does not escape$" + Ssink = pu.SPPi() +} + +func tiSPP() { + s := "cat" // ERROR "moved to heap: s$" + ps := &s + pps := &ps + pu := &U{ps, pps} // ERROR "&U{...} does not escape$" + Ssink = *pu.SPP() +} + +// BAD: need fine-grained analysis to avoid spurious escape of ps +func tSP() { + s := "cat" // ERROR "moved to heap: s$" + ps := &s // ERROR "moved to heap: ps$" + pps := &ps + pu := &U{ps, pps} // ERROR "&U{...} does not escape$" + Ssink = pu.SP() +} + +func (v V) u() U { // ERROR "leaking param: v to result ~r0 level=0$" + return v._u +} + +func (v V) UP() *U { // ERROR "leaking param: v to result ~r0 level=0$" + return v._up +} + +func (v V) UPP() **U { // ERROR "leaking param: v to result ~r0 level=0$" + return v._upp +} + +func (v V) UPPia() *U { // ERROR "leaking param: v to result ~r0 level=1$" + return *v._upp +} + +func (v V) UPPib() *U { // ERROR "leaking param: v to result ~r0 level=1$" + return *v.UPP() +} + +func (v V) USPa() *string { // ERROR "leaking param: v to result ~r0 level=0$" + return v._u._sp +} + +func (v V) USPb() *string { // ERROR "leaking param: v to result ~r0 level=0$" + return v.u()._sp +} + +func (v V) USPPia() *string { // ERROR "leaking param: v to result ~r0 level=1$" + return *v._u._spp +} + +func (v V) USPPib() *string { // ERROR "leaking param: v to result ~r0 level=1$" + return v._u.SPPi() +} + +func (v V) UPiSPa() *string { // ERROR "leaking param: v to result ~r0 level=1$" + return v._up._sp +} + +func (v V) UPiSPb() *string { // ERROR "leaking param: v to result ~r0 level=1$" + return v._up.SP() +} + +func (v V) UPiSPc() *string { // ERROR "leaking param: v to result ~r0 level=1$" + return v.UP()._sp +} + +func (v V) UPiSPd() *string { // ERROR "leaking param: v to result ~r0 level=1$" + return v.UP().SP() +} + +// BAD: need fine-grained (field-sensitive) analysis to avoid spurious escape of all but &s3 +func tUPiSPa() { + s1 := "ant" + s2 := "bat" // ERROR "moved to heap: s2$" + s3 := "cat" // ERROR "moved to heap: s3$" + s4 := "dog" // ERROR "moved to heap: s4$" + s5 := "emu" // ERROR "moved to heap: s5$" + s6 := "fox" // ERROR "moved to heap: s6$" + ps2 := &s2 + ps4 := &s4 // ERROR "moved to heap: ps4$" + ps6 := &s6 // ERROR "moved to heap: ps6$" + u1 := U{&s1, &ps2} + u2 := &U{&s3, &ps4} // ERROR "&U{...} does not escape$" + u3 := &U{&s5, &ps6} // ERROR "&U{...} escapes to heap$" + v := &V{u1, u2, &u3} // ERROR "&V{...} does not escape$" + Ssink = v.UPiSPa() // Ssink = &s3 (only &s3 really escapes) +} + +// BAD: need fine-grained (field-sensitive) analysis to avoid spurious escape of all but &s3 +func tUPiSPb() { + s1 := "ant" + s2 := "bat" // ERROR "moved to heap: s2$" + s3 := "cat" // ERROR "moved to heap: s3$" + s4 := "dog" // ERROR "moved to heap: s4$" + s5 := "emu" // ERROR "moved to heap: s5$" + s6 := "fox" // ERROR "moved to heap: s6$" + ps2 := &s2 + ps4 := &s4 // ERROR "moved to heap: ps4$" + ps6 := &s6 // ERROR "moved to heap: ps6$" + u1 := U{&s1, &ps2} + u2 := &U{&s3, &ps4} // ERROR "&U{...} does not escape$" + u3 := &U{&s5, &ps6} // ERROR "&U{...} escapes to heap$" + v := &V{u1, u2, &u3} // ERROR "&V{...} does not escape$" + Ssink = v.UPiSPb() // Ssink = &s3 (only &s3 really escapes) +} + +// BAD: need fine-grained (field-sensitive) analysis to avoid spurious escape of all but &s3 +func tUPiSPc() { + s1 := "ant" + s2 := "bat" // ERROR "moved to heap: s2$" + s3 := "cat" // ERROR "moved to heap: s3$" + s4 := "dog" // ERROR "moved to heap: s4$" + s5 := "emu" // ERROR "moved to heap: s5$" + s6 := "fox" // ERROR "moved to heap: s6$" + ps2 := &s2 + ps4 := &s4 // ERROR "moved to heap: ps4$" + ps6 := &s6 // ERROR "moved to heap: ps6$" + u1 := U{&s1, &ps2} + u2 := &U{&s3, &ps4} // ERROR "&U{...} does not escape$" + u3 := &U{&s5, &ps6} // ERROR "&U{...} escapes to heap$" + v := &V{u1, u2, &u3} // ERROR "&V{...} does not escape$" + Ssink = v.UPiSPc() // Ssink = &s3 (only &s3 really escapes) +} + +// BAD: need fine-grained (field-sensitive) analysis to avoid spurious escape of all but &s3 +func tUPiSPd() { + s1 := "ant" + s2 := "bat" // ERROR "moved to heap: s2$" + s3 := "cat" // ERROR "moved to heap: s3$" + s4 := "dog" // ERROR "moved to heap: s4$" + s5 := "emu" // ERROR "moved to heap: s5$" + s6 := "fox" // ERROR "moved to heap: s6$" + ps2 := &s2 + ps4 := &s4 // ERROR "moved to heap: ps4$" + ps6 := &s6 // ERROR "moved to heap: ps6$" + u1 := U{&s1, &ps2} + u2 := &U{&s3, &ps4} // ERROR "&U{...} does not escape$" + u3 := &U{&s5, &ps6} // ERROR "&U{...} escapes to heap$" + v := &V{u1, u2, &u3} // ERROR "&V{...} does not escape$" + Ssink = v.UPiSPd() // Ssink = &s3 (only &s3 really escapes) +} + +func (v V) UPiSPPia() *string { // ERROR "leaking param: v to result ~r0 level=2$" + return *v._up._spp +} + +func (v V) UPiSPPib() *string { // ERROR "leaking param: v to result ~r0 level=2$" + return v._up.SPPi() +} + +func (v V) UPiSPPic() *string { // ERROR "leaking param: v to result ~r0 level=2$" + return *v.UP()._spp +} + +func (v V) UPiSPPid() *string { // ERROR "leaking param: v to result ~r0 level=2$" + return v.UP().SPPi() +} + +// BAD: need fine-grained (field-sensitive) analysis to avoid spurious escape of all but &s4 +func tUPiSPPia() { + s1 := "ant" + s2 := "bat" + s3 := "cat" + s4 := "dog" // ERROR "moved to heap: s4$" + s5 := "emu" // ERROR "moved to heap: s5$" + s6 := "fox" // ERROR "moved to heap: s6$" + ps2 := &s2 + ps4 := &s4 + ps6 := &s6 // ERROR "moved to heap: ps6$" + u1 := U{&s1, &ps2} + u2 := &U{&s3, &ps4} // ERROR "&U{...} does not escape$" + u3 := &U{&s5, &ps6} // ERROR "&U{...} does not escape$" + v := &V{u1, u2, &u3} // ERROR "&V{...} does not escape$" + Ssink = v.UPiSPPia() // Ssink = *&ps4 = &s4 (only &s4 really escapes) +} + +// BAD: need fine-grained (field-sensitive) analysis to avoid spurious escape of all but &s4 +func tUPiSPPib() { + s1 := "ant" + s2 := "bat" + s3 := "cat" + s4 := "dog" // ERROR "moved to heap: s4$" + s5 := "emu" // ERROR "moved to heap: s5$" + s6 := "fox" // ERROR "moved to heap: s6$" + ps2 := &s2 + ps4 := &s4 + ps6 := &s6 // ERROR "moved to heap: ps6$" + u1 := U{&s1, &ps2} + u2 := &U{&s3, &ps4} // ERROR "&U{...} does not escape$" + u3 := &U{&s5, &ps6} // ERROR "&U{...} does not escape$" + v := &V{u1, u2, &u3} // ERROR "&V{...} does not escape$" + Ssink = v.UPiSPPib() // Ssink = *&ps4 = &s4 (only &s4 really escapes) +} + +// BAD: need fine-grained (field-sensitive) analysis to avoid spurious escape of all but &s4 +func tUPiSPPic() { + s1 := "ant" + s2 := "bat" + s3 := "cat" + s4 := "dog" // ERROR "moved to heap: s4$" + s5 := "emu" // ERROR "moved to heap: s5$" + s6 := "fox" // ERROR "moved to heap: s6$" + ps2 := &s2 + ps4 := &s4 + ps6 := &s6 // ERROR "moved to heap: ps6$" + u1 := U{&s1, &ps2} + u2 := &U{&s3, &ps4} // ERROR "&U{...} does not escape$" + u3 := &U{&s5, &ps6} // ERROR "&U{...} does not escape$" + v := &V{u1, u2, &u3} // ERROR "&V{...} does not escape$" + Ssink = v.UPiSPPic() // Ssink = *&ps4 = &s4 (only &s4 really escapes) +} + +// BAD: need fine-grained (field-sensitive) analysis to avoid spurious escape of all but &s4 +func tUPiSPPid() { + s1 := "ant" + s2 := "bat" + s3 := "cat" + s4 := "dog" // ERROR "moved to heap: s4$" + s5 := "emu" // ERROR "moved to heap: s5$" + s6 := "fox" // ERROR "moved to heap: s6$" + ps2 := &s2 + ps4 := &s4 + ps6 := &s6 // ERROR "moved to heap: ps6$" + u1 := U{&s1, &ps2} + u2 := &U{&s3, &ps4} // ERROR "&U{...} does not escape$" + u3 := &U{&s5, &ps6} // ERROR "&U{...} does not escape$" + v := &V{u1, u2, &u3} // ERROR "&V{...} does not escape$" + Ssink = v.UPiSPPid() // Ssink = *&ps4 = &s4 (only &s4 really escapes) +} + +func (v V) UPPiSPPia() *string { // ERROR "leaking param: v to result ~r0 level=3$" + return *(*v._upp)._spp +} + +// This test isolates the one value that needs to escape, not because +// it distinguishes fields but because it knows that &s6 is the only +// value reachable by two indirects from v. +// The test depends on the level cap in the escape analysis tags +// being able to encode that fact. +func tUPPiSPPia() { // This test is sensitive to the level cap in function summary results. + s1 := "ant" + s2 := "bat" + s3 := "cat" + s4 := "dog" + s5 := "emu" + s6 := "fox" // ERROR "moved to heap: s6$" + ps2 := &s2 + ps4 := &s4 + ps6 := &s6 + u1 := U{&s1, &ps2} + u2 := &U{&s3, &ps4} // ERROR "&U{...} does not escape$" + u3 := &U{&s5, &ps6} // ERROR "&U{...} does not escape$" + v := &V{u1, u2, &u3} // ERROR "&V{...} does not escape$" + Ssink = v.UPPiSPPia() // Ssink = *&ps6 = &s6 (only &s6 really escapes) +} -- cgit v1.2.3