diff options
author | Stephane Glondu <steph@glondu.net> | 2012-08-20 18:27:01 +0200 |
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committer | Stephane Glondu <steph@glondu.net> | 2012-08-20 18:27:01 +0200 |
commit | e0d682ec25282a348d35c5b169abafec48555690 (patch) | |
tree | 1a46f0142a85df553388c932110793881f3af52f /COMPATIBILITY | |
parent | 86535d84cc3cffeee1dcd8545343f234e7285530 (diff) |
Imported Upstream version 8.4dfsgupstream/8.4dfsg
Diffstat (limited to 'COMPATIBILITY')
-rw-r--r-- | COMPATIBILITY | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/COMPATIBILITY b/COMPATIBILITY index 0849b64f..41474202 100644 --- a/COMPATIBILITY +++ b/COMPATIBILITY @@ -3,4 +3,49 @@ Potential sources of incompatibilities between Coq V8.3 and V8.4 (see also file CHANGES) -TO BE DONE +The main known incompatibilities between 8.3 and 8.4 are consequences +of the following changes: + +- The reorganization of the library of numbers: + + Several definitions have new names or are defined in modules of + different names, but a special care has been taken to have this + renaming transparent for the user thanks to compatibility notations. + + However some definitions have changed, what might require some + adaptations. The most noticeable examples are: + - The "?=" notation which now bind to Pos.compare rather than former + Pcompare (now Pos.compare_cont). + - Changes in names may induce different automatically generated + names in proof scripts (e.g. when issuing "destruct Z_le_gt_dec"). + - Z.add has a new definition, hence, applying "simpl" on subterms of + its body might give different results than before. + - BigN.shiftl and BigN.shiftr have reversed arguments order, the + power function in BigN now takes two BigN. + +- Other changes in libraries: + + - The definition of functions over "vectors" (list of fixed length) + have changed. + - TheoryList.v has been removed. + +- Slight changes in tactics: + + - Less unfolding of fixpoints when applying destruct or inversion on + a fixpoint hiding an inductive type (add an extra call to simpl to + preserve compatibility). + - Less unexpected local definitions when applying "destruct" + (incompatibilities solvable by adapting name hypotheses). + - Tactic "apply" might succeed more often, e.g. by now solving + pattern-matching of the form ?f x y = g(x,y) (compatibility + ensured by using "Unset Tactic Pattern Unification"), but also + because it supports (full) betaiota (using "simple apply" might + then help). + - Tactic autorewrite does no longer instantiate pre-existing + existential variables. + - Tactic "info" is now available only for auto, eauto and trivial. + +- Miscellaneous changes: + + - The command "Load" is now atomic for backtracking (use "Unset + Atomic Load" for compatibility). |