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Add extra check for assembler buffer space.

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wolfbeast 2018-09-04 07:40:42 +02:00 • committed by Roy Tam
commit ac3468d5cc
1 changed files with 2 additions and 1 deletions
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js/src/jit/x86-shared/AssemblerBuffer-x86-shared.h
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@ -93,7 +93,8 @@ namespace jit {
void ensureSpace(size_t space) void ensureSpace(size_t space)
{ {
if (MOZ_UNLIKELY(!m_buffer.reserve(m_buffer.length() + space))) if (MOZ_UNLIKELY(m_buffer.length() > (SIZE_MAX - space) ||
!m_buffer.reserve(m_buffer.length() + space)))
oomDetected(); oomDetected();
} }