CodeQL library for C/C++
codeql/cpp-all 1.1.2-dev (changelog, source)

Member predicate BufferWrite::hasExplicitLimit

Holds if the operation has an explicit parameter that limits the amount of data written (e.g. strncpy does, whereas strcpy does not); this is not the same as exists(getExplicitLimit()) because the limit may exist though it’s value is unknown.

predicate hasExplicitLimit()