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bytevector: validate length in get<T>()

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Don't allow a pointer to T to be taken from a ByteVector that is not at
least sizeof(T) bytes long.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>
This commit is contained in:
Zygo Blaxell 2021-12-25 16:26:34 -05:00
parent 148cc03060
commit 152e69a6d1
1 changed files with 3 additions and 0 deletions
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3
include/crucible/bytevector.h
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@ -1,6 +1,8 @@
#ifndef _CRUCIBLE_BYTEVECTOR_H_
#define _CRUCIBLE_BYTEVECTOR_H_
#include <crucible/error.h>
#include <memory>
#include <mutex>
#include <ostream>
@ -69,6 +71,7 @@ namespace crucible {
T*
ByteVector::get() const
{
THROW_CHECK2(out_of_range, size(), sizeof(T), size() >= sizeof(T));
return reinterpret_cast<T*>(data());
}
}