1. 01 Jun, 2016 3 commits
  2. 30 May, 2016 1 commit
  3. 29 May, 2016 1 commit
  4. 27 May, 2016 5 commits
  5. 13 Apr, 2016 1 commit
  6. 02 Mar, 2016 1 commit
  7. 16 Feb, 2016 3 commits
  8. 13 Feb, 2016 2 commits
    • Robbert Krebbers's avatar
      Use new Import/Export syntax everywhere. · 7dd32d7d
      Robbert Krebbers authored
      Also, make our redefinition of done more robust under different
      orders of Importing modules.
    • Robbert Krebbers's avatar
      Make reflexivity hints work for evars. · 86803d3a
      Robbert Krebbers authored
      Since Coq 8.4 did not backtrack on eauto premises, we used to ensure
      that hints like
        Hint Extern 0 (?x ≡{_}≡ ?y) => reflexivity.
      were not used for goals involving evars by writing ?x ≡{_}≡ ?y instead
      of _ ≡{_}≡ _.
      This seems to be a legacy issue that no longer applies to Coq 8.5, so
      I have removed these restrictions making these hints thus more powerful.
  9. 11 Feb, 2016 1 commit
  10. 10 Feb, 2016 1 commit
  11. 16 Jan, 2016 2 commits
  12. 12 Jan, 2016 1 commit
  13. 21 Dec, 2015 1 commit
  14. 15 Dec, 2015 1 commit
  15. 19 Nov, 2015 1 commit
  16. 18 Nov, 2015 2 commits
  17. 17 Nov, 2015 1 commit
  18. 16 Nov, 2015 1 commit
  19. 03 Feb, 2017 1 commit
  20. 01 Feb, 2017 2 commits
    • Robbert Krebbers's avatar
      Port to Coq 8.5 beta 2. · 02f213ce
      Robbert Krebbers authored
      The port makes the following notable changes:
      * The carrier types of separation algebras and integer environments are no
        longer in Set. Now they have a type at a fixed type level above Set. This
        both works better in 8.5 and makes the formalization more general.
        I have tried putting them at polymorphic type levels, but that increased the
        compilation time by an order of magnitude.
      * I am using a custom f_equal tactic written in Ltac to circumvent bug #4069.
        That bug has been fixed, so this custom tactic can be removed when the next
        beta of 8.5 is out.
    • Robbert Krebbers's avatar
      Misc prelude omissions. · 462ea92a
      Robbert Krebbers authored
  21. 10 Jun, 2015 1 commit
  22. 25 Feb, 2015 1 commit
  23. 13 Feb, 2015 1 commit
  24. 08 Feb, 2015 2 commits
    • Robbert Krebbers's avatar
      Update copyright headers. · 5a73c4ed
      Robbert Krebbers authored
    • Robbert Krebbers's avatar
      Support function pointers and use a state monad in the frontend. · b2109c25
      Robbert Krebbers authored
      Important changes in the core semantics:
      * Types extended with function types. Since function types are a special kind
        of pointer types, types now have an additional mutual part called "ptr_type".
      * Pointers extended with function pointers. Theses are just names that refer
        to an actual function in the function environment.
      * Typing environments extended to assign argument and return types to function
        names. Before we used a separate environment for these, but since the
        argument and return types are already needed to type function pointers, this
        environment would appear in pretty much every typing judgment.
      As a side-effect, the frontend has been rewritten entirely. The important
      changes are:
      * Type checking of expressions is more involved: there is a special kind of
        expression type corresponding to a function designator.
      * To handle things like block scoped extern function, more state-fullness was
        needed. To prepare for future extensions, the entire frontend now uses a
        state monad.
  25. 27 Jan, 2015 1 commit
    • Robbert Krebbers's avatar
      Let the malloc expression non-deterministically yield NULL. · fdcc90dd
      Robbert Krebbers authored
      * This behavior is "implementation defined" and can be turned on and off
        using the Boolean field "alloc_can_fail" of the class "Env".
      * The expression "EAlloc" is now an r-value of pointer type instead of an
      * The executable semantics for expressions is now non-deterministic. Hence,
        some proofs had to be revised.
  26. 25 Jan, 2015 1 commit
  27. 15 Nov, 2014 1 commit
    • Robbert Krebbers's avatar
      More accurate formalization of integer ranks. · da7a14bb
      Robbert Krebbers authored
      Integers with the same size, are no longer supposed to have the same rank. As a
      result, the C integer types (char, short, int, long, long long) are different
      (and thus cannot alias) even if they have the same size. We now have to use a
      more involved definition of integer promotions and usual arithmetic conversions.
      However, this new definition follows the C standard literally.