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| author | Austin Clements <austin@google.com> | 2017-05-11 15:22:10 -0400 |
|---|---|---|
| committer | Chris Broadfoot <cbro@golang.org> | 2017-05-23 19:41:17 +0000 |
| commit | fb9770f09b99293a4aba55ec1d0fc6e6733b9e6e (patch) | |
| tree | 824d898c4119b162db1993efeaa2f6c2414519f7 | |
| parent | b6a8fc8d8cef50a62e6f5169054ae4c800481386 (diff) | |
| download | go-fb9770f09b99293a4aba55ec1d0fc6e6733b9e6e.tar.gz go-fb9770f09b99293a4aba55ec1d0fc6e6733b9e6e.zip | |
[release-branch.go1.8] runtime: print debug info on "base out of range"
Cherry-pick of CL 43310.
This adds debugging information when we panic with "heapBitsForSpan:
base out of range".
Updates #20259.
Change-Id: I0dc1a106aa9e9531051c7d08867ace5ef230eb3f
Reviewed-on: https://go-review.googlesource.com/43410
Run-TryBot: Austin Clements <austin@google.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
| -rw-r--r-- | src/runtime/mbitmap.go | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/runtime/mbitmap.go b/src/runtime/mbitmap.go index 89d8a4cc76..9b988fae25 100644 --- a/src/runtime/mbitmap.go +++ b/src/runtime/mbitmap.go @@ -374,6 +374,7 @@ func heapBitsForAddr(addr uintptr) heapBits { // heapBitsForSpan returns the heapBits for the span base address base. func heapBitsForSpan(base uintptr) (hbits heapBits) { if base < mheap_.arena_start || base >= mheap_.arena_used { + print("runtime: base ", hex(base), " not in range [", hex(mheap_.arena_start), ",", hex(mheap_.arena_used), ")\n") throw("heapBitsForSpan: base out of range") } return heapBitsForAddr(base) |