Hi all, We have just pushed Hyperscan 4.3.0 to Github. Here is the list of changes since 4.2 (from the changelog): [4.3.0] 2016-08-24 * Introduce a new analysis pass ("Violet") used for decomposition of patterns into literals and smaller engines. * Introduce a new container engine ("Tamarama") for infix and suffix engines that can be proven to run exclusively of one another. This reduces stream state for pattern sets with many such engines. * Introduce a new shuffle-based DFA engine ("Sheng"). This improves scanning performance for pattern sets where small engines are generated. * Improve the analysis used to extract extra mask information from short literals. * Reduced compile time spent in equivalence class analysis. * Build: frame pointers are now only omitted for 32-bit release builds. * Build: Workaround for C++ issues reported on FreeBSD/libc++ platforms. (github issue #27) * Simplify the LimEx NFA with a unified "variable shift" model, which reduces the number of different NFA code paths to one per model size. * Allow some anchored prefixes that may squash the literal to which they are attached to run eagerly. This improves scanning performance for some patterns. * Simplify and improve EOD ("end of data") matching, using the interpreter for all operations. * Elide unnecessary instructions in the Rose interpreter at compile time. * Reduce the number of inlined instantiations of the Rose interpreter in order to reduce instruction cache pressure. * Small improvements to literal matcher acceleration. * Parser: ignore \E metacharacters that are not preceded by \Q. This conforms to PCRE's behaviour, rather than returning a compile error. * Check for misaligned memory when allocating an error structure in Hyperscan's compile path and return an appropriate error if detected. Regards, Matt.