[dev.garbage] runtime: Turn concurrent GC on by default. Avoid write barriers for GC internal structures such as free lists.
LGTM=rsc
R=rsc
CC=golang-codereviews, rsc
https://golang.org/cl/179000043
diff --git a/src/runtime/heapdump.go b/src/runtime/heapdump.go
index c942e01..c6f9702 100644
--- a/src/runtime/heapdump.go
+++ b/src/runtime/heapdump.go
@@ -464,8 +464,8 @@
if n > uintptr(len(freemark)) {
gothrow("freemark array doesn't have enough entries")
}
- for l := s.freelist; l != nil; l = l.next {
- freemark[(uintptr(unsafe.Pointer(l))-p)/size] = true
+ for l := s.freelist; l.ptr() != nil; l = l.ptr().next {
+ freemark[(uintptr(l)-p)/size] = true
}
for j := uintptr(0); j < n; j, p = j+1, p+size {
if freemark[j] {
