From 5ab9f23977694ab87614fd30e081d294eb313efd Mon Sep 17 00:00:00 2001 From: Cuong Manh Le Date: Tue, 29 Jul 2025 18:45:23 +0700 Subject: cmd/compile, runtime: add checkptr instrumentation for unsafe.Add Fixes #74431 Change-Id: Id651ea0b82599ccaff8816af0a56ddbb149b6f89 Reviewed-on: https://go-review.googlesource.com/c/go/+/692015 LUCI-TryBot-Result: Go LUCI Reviewed-by: Keith Randall Auto-Submit: Cuong Manh Le Reviewed-by: Keith Randall Reviewed-by: t hepudds Reviewed-by: Dmitri Shuralyov --- src/runtime/testdata/testprog/checkptr.go | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'src/runtime/testdata') diff --git a/src/runtime/testdata/testprog/checkptr.go b/src/runtime/testdata/testprog/checkptr.go index 60e71e66d7..ff99fa8c7b 100644 --- a/src/runtime/testdata/testprog/checkptr.go +++ b/src/runtime/testdata/testprog/checkptr.go @@ -16,6 +16,7 @@ func init() { register("CheckPtrAlignmentNilPtr", CheckPtrAlignmentNilPtr) register("CheckPtrArithmetic", CheckPtrArithmetic) register("CheckPtrArithmetic2", CheckPtrArithmetic2) + register("CheckPtrArithmeticUnsafeAdd", CheckPtrArithmeticUnsafeAdd) register("CheckPtrSize", CheckPtrSize) register("CheckPtrSmall", CheckPtrSmall) register("CheckPtrSliceOK", CheckPtrSliceOK) @@ -79,6 +80,11 @@ func CheckPtrArithmetic2() { sink2 = unsafe.Pointer(uintptr(p) & ^one) } +func CheckPtrArithmeticUnsafeAdd() { + data := make([]byte, 128) + sink2 = (*byte)(unsafe.Add(unsafe.Pointer(unsafe.SliceData(data)), len(data))) +} + func CheckPtrSize() { p := new(int64) sink2 = p -- cgit v1.3-5-g9baa