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Bug 932851 - Do not read from empty buffers when discarding, r=jorendorff

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--HG--
extra : rebase_source : c7e537f280ee0b35c67a7aee9ad4d4b60d646dbd
This commit is contained in:
Steve Fink 2013-11-14 20:42:31 -08:00
parent fc6eff9c20
commit 945123d0cc
1 changed files with 2 additions and 0 deletions
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2
js/src/vm/StructuredClone.cpp
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@ -345,6 +345,8 @@ static void
Discard(const uint64_t *begin, const uint64_t *end)
{
const uint64_t *point = begin;
if (begin >= end)
return; // Empty buffer
uint64_t u = LittleEndian::readUint64(point++);
uint32_t tag = uint32_t(u >> 32);