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

runtime: only check for pointers up to ptrdata, not size

Browse source 
Change-Id: I166cf253b7f2483d652c98d2fba36c380e2f3347
Reviewed-on: https://go-review.googlesource.com/c/go/+/227177
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Ian Lance Taylor 2020-04-02 17:14:25 -07:00
parent 8e121b1587
commit 08dd4ad7e3
2 changed files with 21 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/runtime/slice.go
View file

@ -182,7 +182,7 @@ func growslice(et *_type, old slice, cap int) slice {
if lenmem > 0 && writeBarrier.enabled {
// Only shade the pointers in old.array since we know the destination slice p
// only contains nil pointers because it has been cleared during alloc.
bulkBarrierPreWriteSrcOnly(uintptr(p), uintptr(old.array), lenmem)
bulkBarrierPreWriteSrcOnly(uintptr(p), uintptr(old.array), lenmem-et.size+et.ptrdata)
}
}
memmove(p, old.array, lenmem)