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encoding/gob: increase "tooBig" from 1GB to 8GB on 64-bit machines

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A little shift magic makes it easy to adjust the maximum buffer
size on machines with larger integers.

Fixes #27635

Change-Id: I1f26b07a363fbb9730df2377052475fa88bbb781
Reviewed-on: https://go-review.googlesource.com/c/143678
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Rob Pike 2018-10-22 14:17:06 +11:00
parent 7c2718b12a
commit 3bf9b77c0c
1 changed files with 4 additions and 4 deletions
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8
src/encoding/gob/decoder.go
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@ -12,10 +12,10 @@ import (
"sync"
)
// tooBig provides a sanity check for sizes; used in several places.
// Upper limit of 1GB, allowing room to grow a little without overflow.
// TODO: make this adjustable?
const tooBig = 1 << 30
// tooBig provides a sanity check for sizes; used in several places. Upper limit
// of is 1GB on 32-bit systems, 8GB on 64-bit, allowing room to grow a little
// without overflow.
const tooBig = (1 << 30) << (^uint(0) >> 62)
// A Decoder manages the receipt of type and data information read from the
// remote side of a connection.