Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

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Chapter 8. Version history

Table of Contents

From V2.21 to V2.22 (Boost 1.48)
From V2.20 to V2.21 (Boost 1.47)
From V2.12 to V2.20 (Boost 1.46)
From V2.10 to V2.12 (Boost 1.45)
From V2.0 to V2.12 (Boost 1.44)

From V2.21 to V2.22 (Boost 1.48)

  • eUML: added easier event reprocessing: process(event_) and reprocess()

  • Rewrite of internal transition tables. There were a few bugs (failing recursivity in internal transition tables of sub-sub machines) and a missing feature (unused internal transition table of the main state machine).

  • Bugfixes

    • Reverted favor_compile_time policy to Boost 1.46 state

    • none event now is convertible from any other event

    • eUML and pseudo exit states

    • Fixed not working Flag_AND

    • Fixed rare bugs causing multiple processing of the same event in a submachine whose transition table contains this event and a base event of it.

    • gcc warnings about unused variables

  • Breaking change: the new internal transition table feature causes a minor breaking change. In a submachine, the "Fsm" template parameter for guards / actions of an internal table declared using internal_transition_table now is the submachine, not the higher-level state machine. Internal transitions declared using internal rows in the higher-level state machine keep their behavior (the "Fsm" parameter is the higher-level state machine). To sum up, the internal transition "Fsm" parameter is the closest state machine containing this transition.