Skip to content
GitLab
Projects
Groups
Snippets
Help
Loading...
Help
What's new
7
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
Open sidebar
Jonas Kastberg
iris
Commits
48419ecc
Commit
48419ecc
authored
Dec 13, 2017
by
Ralf Jung
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
CHANGELOG
parent
3b1fcdab
Changes
1
Hide whitespace changes
Inline
Sidebyside
Showing
1 changed file
with
22 additions
and
18 deletions
+22
18
CHANGELOG.md
CHANGELOG.md
+22
18
No files found.
CHANGELOG.md
View file @
48419ecc
...
...
@@ 7,13 +7,15 @@ Coq development, but not every APIbreaking change is listed. Changes marked
Changes in and extensions of the theory:
*
[Experimental feature] Add new modality: ■ ("plainly").
*
Define
`uPred`
as a quotient on monotone predicates
`M > SProp`
.
*
Get rid of some primitive laws; they can be derived:
`True ⊢ □ True`
and
`□ (P ∧ Q) ⊢ □ (P ∗ Q)`
*
Camera morphisms have to be homomorphisms, not just monotone functions.
*
Add a proof that
`f`
has a fixed point if
`f^k`
is contractive.
*
Constructions for least and greatest fixed points over monotone predicates
(defined in the logic of Iris using impredicative quantification).
*
Add a proof of the inverse of
`wp_bind`
.
*
[Experimental feature] Add new modality: ■ ("plainly").
*
[Experimental feature] Support verifying code that might get stuck by
distinguishing "nonstuck" vs. "(potentially) stuck" weakest
preconditions. (See [Swasey et al., OOPSLA '17] for examples.) The nonstuck
...
...
@@ 25,6 +27,18 @@ Changes in and extensions of the theory:
Changes in Coq:
*
Move the
`prelude`
folder to its own project: std++
*
Some extensions/improvements of heap_lang:

Improve handling of pure (nonstatedependent) reductions.

Add fetchandadd (
`FAA`
) operation.

Add syntax for all Coq's binary operations on
`Z`
.
*
Generalize
`saved_prop`
to let the user choose the location of the typelevel
later. Rename the general form to
`saved_anything`
. Provide
`saved_prop`
and
`saved_pred`
as special cases.
*
Improved big operators:
+
They are no longer tied to cameras, but work on any monoid
+
The version of big operations over lists was redefined so that it enjoys
more definitional equalities.
*
Rename some things and change notation:

The unit of a camera:
`empty`
>
`unit`
,
`∅`
>
`ε`

Disjointness:
`⊥`
>
`##`
...
...
@@ 63,6 +77,8 @@ Changes in Coq:
```
sed 's/\bPersistentP\b/Persistent/g; s/\bTimelessP\b/Timeless/g; s/\bCMRADiscrete\b/CmraDiscrete/g; s/\bCMRAT\b/CmraT/g; s/\bCMRAMixin\b/CmraMixin/g; s/\bUCMRAT\b/UcmraT/g; s/\bUCMRAMixin\b/UcmraMixin/g; s/\bSTS\b/Sts/g' i $(find name "*.v")
```
*
`PersistentL`
and
`TimelessL`
(persistence and timelessness of lists of
propositions) are replaces by
`TCForall`
from std++.
*
Fix a bunch of consistency issues in the proof mode, and make it overall more
usable. In particular:

All proof mode tactics start the proof mode if necessary;
`iStartProof`
is
...
...
@@ 84,9 +100,6 @@ sed 's/\bPersistentP\b/Persistent/g; s/\bTimelessP\b/Timeless/g; s/\bCMRADiscret
behind a type class opaque definition. Furthermore, this can change the
name of anonymous identifiers introduced with the "%" pattern.
*
Make
`ofe_fun`
dependently typed, subsuming
`iprod`
. The latter got removed.
*
Generalize
`saved_prop`
to let the user choose the location of the typelevel
later. Rename the general form to
`saved_anything`
. Provide
`saved_prop`
and
`saved_pred`
as special cases.
*
Define the generic
`fill`
operation of the
`ectxi_language`
construct in terms
of a left fold instead of a right fold. This gives rise to more definitional
equalities.
...
...
@@ 95,25 +108,16 @@ sed 's/\bPersistentP\b/Persistent/g; s/\bTimelessP\b/Timeless/g; s/\bCMRADiscret
type classes and canonical structures. Also, it now uses explicit mixins. The
file
`program_logic/ectxi_language`
contains some documentation on how to
setup Iris for your language.
*
Improved big operators:
+
The
y
are
no long
er t
ied to cameras,
b
u
t
work on any monoid
+
The version of big operations over lists was redefined so that it enjoys
more definitional equalities
.
*
Restore the original, stronger notion of atomicity alongside the weaker
notion.
The
se
are
`Atomic a e`
wh
er
e
t
he stuckness
b
i
t
`s`
indicates whether
expression
`e`
is weakly (
`a = WeaklyAtomic`
) or strongly (
`a =
StronglyAtomic`
) atomic
.
*
Various improvements to
`solve_ndisj`
.
*
Some extensions/improvements of heap_lang:

Improve handling of pure (nonstatedependent) reductions.

Add fetchandadd (
`FAA`
) operation.

Syntax for all Coq's binary operations on
`Z`
.
*
Use
`Hint Mode`
to prevent Coq from making arbitrary guesses in the presence
of evars, which often led to divergence. There are a few places where type
annotations are now needed.
*
Move the
`prelude`
folder to its own project: std++
*
The rules
`internal_eq_rewrite`
and
`internal_eq_rewrite_contractive`
are now
stated in the logic, i.e. they are
`iApply`
friendly.
*
Restore the original, stronger notion of atomicity alongside the weaker
notion. These are
`Atomic a e`
where the stuckness bit
`s`
indicates whether
expression
`e`
is weakly (
`a = WeaklyAtomic`
) or strongly (
`a =
StronglyAtomic`
) atomic.
stated in the logic, i.e., they are
`iApply`
friendly.
## Iris 3.0.0 (released 20170111)
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
.
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment