diff options
Diffstat (limited to 'src/runtime/mgc0.c')
| -rw-r--r-- | src/runtime/mgc0.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/runtime/mgc0.c b/src/runtime/mgc0.c index 7754bad89d..083beec229 100644 --- a/src/runtime/mgc0.c +++ b/src/runtime/mgc0.c @@ -350,6 +350,9 @@ scanblock(byte *b, uintptr n, byte *ptrmask) x -= (uintptr)arena_start>>PageShift; s = runtime·mheap.spans[x]; if(s == nil || k < s->start || obj >= s->limit || s->state != MSpanInUse) { + // Sometimes 32-bit heaps have holes. See issue 9872 + if(PtrSize == 4 && s == nil) + continue; // Stack pointers lie within the arena bounds but are not part of the GC heap. // Ignore them. if(s != nil && s->state == MSpanStack) |