message: test: Disable pointer-subtract sanitizer in constexpr
  The "pointer-subtract" sanitizer is disabled because GCC fails to compile
  constexpr function with pointer subtraction.
  The bug
  is to be fixed in GCC 10.3.
diff: @@ -103,7 +103,15 @@ public:
  constexpr Iterator begin() const { return m_begin; }
  constexpr Iterator end() const { return m_end; }
  - constexpr size_t size() const { return static_cast<size_t>(m_end - m_begin); }
  +
  + [[gnu::no_sanitize("pointer-subtract")]] constexpr size_t size() const
  + {
  + // The "pointer-subtract" sanitizer is disabled because GCC fails to compile
  + // constexpr function with pointer subtraction.
  + // The bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97145
  + // is to be fixed in GCC 10.3.
  + return static_cast<size_t>(m_end - m_begin);
  + }
  };
  // The list of positive floating-point values without zero, infinity and NaNs.
  