diff options
Diffstat (limited to 'COMPATIBILITY')
| -rw-r--r-- | COMPATIBILITY | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/COMPATIBILITY b/COMPATIBILITY new file mode 100644 index 00000000..bb293baa --- /dev/null +++ b/COMPATIBILITY @@ -0,0 +1,32 @@ +Potential sources of incompatibilities between Coq V8.0 and V8.1 +---------------------------------------------------------------- + +(see also file CHANGES) + +- Inductive types in Type are now polymorphic over their parameters in + Type. This may affect the naming of introduction hypotheses if such + an inductive type in Type is used on small types such as Prop or + Set: the hypothesis names suffix will default to H instead of X. As + a matter of fact, it is recommended to systematically name the + hypotheses that are later refered to in the proof script. + +- Some bug fixes may lead to incompatibilities. This is e.g. the case + of inversion on Type which failed to rewrite some hypotheses as it + did on Prop/Set. + +- Add Morphism for the Prop/iff setoid now requires a proof of + biimplication instead of a proof of implication. + +- The order of arguments in compatibility morphisms changed: the + premises and the parameters are now interleaved while the whole + bunch of parameters used to come first. + +- A few changes in the library (as mentioned in the CHANGES file) may + imply the need for local adaptations. + +- Occurrence numbering order for unfold, pattern, etc changed for the + match construction: occurrences in the return clause now come after + the occurrences in the term matched; this was the opposite before. + +- For changes in the ML interfaces, see file dev/doc/changes.txt in + the main archive. |