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AK: Correct ByteBuffer::{overwrite,slice*} bounds check

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AnotherTest 2020-04-27 21:53:39 +04:30 committed by Andreas Kling
parent 7f1d3f6d62
commit cf5941c972
Notes: sideshowbarker 2024-07-19 07:06:39 +09:00 
Author: https://github.com/alimpfard
Commit: https://github.com/SerenityOS/serenity/commit/cf5941c972e
Pull-request: https://github.com/SerenityOS/serenity/pull/1661
Reviewed-by: https://github.com/Dexesttp
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/itamar8910
1 changed files with 11 additions and 11 deletions
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22
AK/ByteBuffer.h
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@ -94,9 +94,9 @@ private:
Wrap,
Adopt
};
explicit ByteBufferImpl(size_t); // For ConstructionMode=Uninitialized
explicit ByteBufferImpl(size_t); // For ConstructionMode=Uninitialized
ByteBufferImpl(const void*, size_t, ConstructionMode); // For ConstructionMode=Copy
ByteBufferImpl(void*, size_t, ConstructionMode); // For ConstructionMode=Wrap/Adopt
ByteBufferImpl(void*, size_t, ConstructionMode); // For ConstructionMode=Wrap/Adopt
ByteBufferImpl() {}
u8* m_data { nullptr };
@ -183,10 +183,10 @@ public:
{
if (is_null())
return {};
if (offset >= this->size())
return {};
if (offset + size >= this->size())
size = this->size() - offset;
// I cannot hand you a slice I don't have
ASSERT(offset + size <= this->size());
return wrap(offset_pointer(offset), size);
}
@ -194,10 +194,10 @@ public:
{
if (is_null())
return {};
if (offset >= this->size())
return {};
if (offset + size >= this->size())
size = this->size() - offset;
// I cannot hand you a slice I don't have
ASSERT(offset + size <= this->size());
return copy(offset_pointer(offset), size);
}
@ -222,7 +222,7 @@ public:
void overwrite(size_t offset, const void* data, size_t data_size)
{
// make sure we're not told to write past the end
ASSERT(offset + data_size < size());
ASSERT(offset + data_size <= size());
__builtin_memcpy(this->data() + offset, data, data_size);
}