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Merge #14357: streams: Fix broken streams_vector_reader test. Remove unused seek(size_t).

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4f4993fe2a Remove UBSan suppression (practicalswift)
958e1a307e streams: Remove unused seek(size_t) (practicalswift)

Pull request description:

  Fix broken `streams_vector_reader` test. Remove unused `seek(size_t)`.

  Before this change the test `streams_vector_reader` triggered an unintended unsigned integer wraparound. It tried so seek using a negative value in `reader.seek(-6)`.

  Changes in this PR:
  * Fix broken `VectorReader::seek(size_t)` test case
  * Remove unused `seek(size_t)`

Tree-SHA512: 6c6affd680626363eef9e496748f2f86a522325abab9d6b13161f41125cdc29ceb36c2c1509c90b8ff108d606df7629e55e094cc2b6253b05a892b81ce176b71
This commit is contained in:
MarcoFalke 2019-01-05 15:06:38 +01:00 committed by Munkybooty
parent 7bd7b9b38a
commit aefeef25b8
3 changed files with 9 additions and 22 deletions
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20
src/streams.h
View File

@ -121,12 +121,6 @@ class CVectorWriter
{
return nType;
}
void seek(size_t nSize)
{
nPos += nSize;
if(nPos > vchData.size())
vchData.resize(nPos);
}
size_t size() const
{
return vchData.size() - nPos;
@ -157,9 +151,11 @@ public:
* @param[in] pos Starting position. Vector index where reads should start.
*/
VectorReader(int type, int version, const std::vector<unsigned char>& data, size_t pos)
: m_type(type), m_version(version), m_data(data)
: m_type(type), m_version(version), m_data(data), m_pos(pos)
{
seek(pos);
if (m_pos > m_data.size()) {
throw std::ios_base::failure("VectorReader(...): end of data (m_pos > m_data.size())");
}
}
/**
@ -202,14 +198,6 @@ public:
memcpy(dst, m_data.data() + m_pos, n);
m_pos = pos_next;
}
void seek(size_t n)
{
m_pos += n;
if (m_pos > m_data.size()) {
throw std::ios_base::failure("VectorReader::seek(): end of data");
}
}
};
/** Double ended buffer combining vector and stream-like interfaces.

10
src/test/streams_tests.cpp
View File

@ -103,15 +103,15 @@ BOOST_AUTO_TEST_CASE(streams_vector_reader)
BOOST_CHECK_THROW(reader >> d, std::ios_base::failure);
// Read a 4 bytes as a signed int from the beginning of the buffer.
reader.seek(-6);
reader >> d;
VectorReader new_reader(SER_NETWORK, INIT_PROTO_VERSION, vch, 0);
new_reader >> d;
BOOST_CHECK_EQUAL(d, 67370753); // 1,255,3,4 in little-endian base-256
BOOST_CHECK_EQUAL(reader.size(), 2);
BOOST_CHECK(!reader.empty());
BOOST_CHECK_EQUAL(new_reader.size(), 2);
BOOST_CHECK(!new_reader.empty());
// Reading after end of byte vector throws an error even if the reader is
// not totally empty.
BOOST_CHECK_THROW(reader >> d, std::ios_base::failure);
BOOST_CHECK_THROW(new_reader >> d, std::ios_base::failure);
}
BOOST_AUTO_TEST_CASE(streams_vector_reader_rvalue)

1
test/sanitizer_suppressions/ubsan
View File

@ -28,7 +28,6 @@ unsigned-integer-overflow:policy/fees.cpp
unsigned-integer-overflow:prevector.h
unsigned-integer-overflow:script/interpreter.cpp
unsigned-integer-overflow:stl_bvector.h
unsigned-integer-overflow:streams.h
unsigned-integer-overflow:txmempool.cpp
unsigned-integer-overflow:util/strencodings.cpp
unsigned-integer-overflow:validation.cpp