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Merge pull request #149 from azat-ch/small-vector-msan

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Use std::vector instead of boost::container::small_vector under MSan
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Konstantinos Margaritis 2023-05-23 18:45:10 +03:00 committed by GitHub
commit 38431d1117
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1 changed files with 16 additions and 2 deletions
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18
src/util/small_vector.h
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@ -29,7 +29,11 @@
#ifndef UTIL_SMALL_VECTOR_H
#define UTIL_SMALL_VECTOR_H
#include <vector>
#if defined(__has_feature)
# if __has_feature(memory_sanitizer)
#define BUILD_WITH_MSAN
# endif
#endif
#include <boost/version.hpp>
@ -37,8 +41,16 @@
* We use the small_vector constructors introduced in Boost 1.61 (trac bug
* #11866, github commit b436c91). If the Boost version is too old, we fall
* back to using std::vector.
*
* Also with MSan boost::container::small_vector cannot be used because MSan
* reports some issues there, it looks similar to [1], but even adding
* __attribute__((no_sanitize_memory)) for ~small_vector_base() [2] is not
* enough since clang-16, so let's simply use std::vector under MSan.
*
* [1]: https://github.com/google/sanitizers/issues/854
* [2]: https://github.com/ClickHouse/boost/commit/229354100
*/
#if BOOST_VERSION >= 106100
#if !defined(BUILD_WITH_MSAN) && BOOST_VERSION >= 106100
# define HAVE_BOOST_CONTAINER_SMALL_VECTOR
#endif
@ -56,6 +68,8 @@ using small_vector = boost::container::small_vector<T, N, Allocator>;
#else
#include <vector>
// Boost version isn't new enough, fall back to just using std::vector.
template <class T, std::size_t N, typename Allocator = std::allocator<T>>
using small_vector = std::vector<T, Allocator>;