Stowage/go
2
0
Fork 0
mirror of https://github.com/golang/go.git synced 2025-12-08 06:10:04 +00:00
Code Issues Projects Releases Packages Wiki Activity

cmd/compile, runtime: store pointers to go:notinheap types indirectly

Browse source 
pointers to go:notinheap types should be treated as scalars. That
means they shouldn't be stored directly in interfaces, or directly
in reflect.Value.ptr.

Also be sure to use uintpr to compare such pointers in reflect.DeepEqual.

Fixes #42076

Change-Id: I53735f6d434e9c3108d4940bd1bae14c61ef2a74
Reviewed-on: https://go-review.googlesource.com/c/go/+/264480
Trust: Keith Randall <khr@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Keith Randall 2020-10-22 16:37:19 -07:00
parent 933721b8c7
commit 009d714098
6 changed files with 81 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/cmd/compile/internal/gc/subr.go
View file

@ -1854,8 +1854,10 @@ func isdirectiface(t *types.Type) bool {
}
switch t.Etype {
case TPTR,
TCHAN,
case TPTR:
// Pointers to notinheap types must be stored indirectly. See issue 42076.
return !t.Elem().NotInHeap()
case TCHAN,
TMAP,
TFUNC,
TUNSAFEPTR: