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runtime: diagnose invalid pointers during GC

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For #9880. Let's see what breaks.

Change-Id: Ic8b99a604e60177a448af5f7173595feed607875
Reviewed-on: https://go-review.googlesource.com/10818
Reviewed-by: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
This commit is contained in:
Russ Cox 2015-06-07 23:42:03 -04:00
parent 7feb424928
commit 38d9b2a3a9
1 changed files with 1 additions and 1 deletions
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2
src/runtime/mbitmap.go
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@ -201,7 +201,7 @@ func heapBitsForObject(p uintptr) (base uintptr, hbits heapBits, s *mspan) {
// The following ensures that we are rigorous about what data
// structures hold valid pointers.
// TODO(rsc): Check if this still happens.
if false {
if true {
// Still happens sometimes. We don't know why.
printlock()
print("runtime:objectstart Span weird: p=", hex(p), " k=", hex(k))