Summary:
In the process of computing `Context.solve`, fresh variables can be
generated. Not all of these end up in the final solution
substitution. Currently all of the freshly generated variables are
returned to the client, which leads to extraneous existentials. This
diff trims the returned fresh variables to only those that appear in
the final solution.
Reviewed By: ngorogiannis
Differential Revision: D24746241
fbshipit-source-id: 59a2f221b
Summary:
Since floats of any width are interpreted the same (as exact rationals
where possible and uninterpreted constants otherwise), this does not
introduce additional infidelity.
Reviewed By: da319
Differential Revision: D24746225
fbshipit-source-id: bc8e7bdb9
Summary:
Since non-integral address spaces are not currently supported anyhow,
this does not introduce additional infidelity.
Reviewed By: da319
Differential Revision: D24746234
fbshipit-source-id: 1f6887a78
Summary: Just to make the source and destination types of the conversion more clear.
Reviewed By: da319
Differential Revision: D24746239
fbshipit-source-id: 592c7d0f1
Summary:
Since Context treats only equality directly, formulas involving other
literals can normalize to false when the context is not unsat. This
diff changes Sh.star to check this case, and return the canonical
false symbolic heap.
Reviewed By: da319
Differential Revision: D24746227
fbshipit-source-id: 50a51b8a6
Summary:
- Treat missing baseline files as if empty
- Only filter unchanged results if a baseline file is given
- Minor optimization
- Sort multiple statuses
- Fix total computation
- List tests with failing statues first
- Do not use `Format.formatter_of_out_channel` since it sometimes does
not work for some unknown reason, e.g. when the output should have
only one line, none are emitted.
Reviewed By: da319
Differential Revision: D24746236
fbshipit-source-id: f4ead1531
Summary:
There is a feature in Nullsafe that is interfering with "annotation
graph" feature. Because of this we would not detect provisional
violations for misuses of params of equals() (They will be recorded
as user facing rather than provisional issues).
This diff turns this feature off for annotation graph mode.
Reviewed By: artempyanykh
Differential Revision: D24726655
fbshipit-source-id: 4b7577667
Summary:
Virtual "this" invisible param exists in the annotated signature, but
does not exist in some other places, which causes a lot of annoyance in
different places.
This diff does not intend to solve all this, but makes one step forward.
1/ AnnotatedNullability now explicitly distincts normal params and
VirtualThis.
2/ AnnotatedSignature accounts for this via: a) not having redundant
fake annotation points b) having corrent param indices (those were off
by 1 in non-virtul methods).
Reviewed By: artempyanykh
Differential Revision: D24726480
fbshipit-source-id: fdb8bb0fb
Summary: This is a complex enough feature so iterating on it in a safe manner will be useful.
Reviewed By: artempyanykh
Differential Revision: D24725406
fbshipit-source-id: 81b247143
Summary: `folly::Optional::value()` returns a reference, hence an error was shown when the actual value was being accessed. Since `value()` throws an exception in case of `folly::none`, we want to show the error message at the call site of `value()`. We do this by dereferencing the result of `value()` in the model.
Reviewed By: jvillard
Differential Revision: D24702875
fbshipit-source-id: ca9f30349
Summary:
This is needed for `infer reportdiff` to report issues that are in files
in the same workspace but were captured under a different project root,
but it's also legit to do so in general as "under project root" really
means "this file belongs to the project under analysis".
Reviewed By: martintrojer
Differential Revision: D24755592
fbshipit-source-id: fa8fab127
Summary: In cpp, lambda's `operator()` name includes line and column numbers which were not ignore when computing bug hash.
Reviewed By: jberdine
Differential Revision: D24649125
fbshipit-source-id: 7a235fd3e
Summary: Includes all changes made from the last time of `make doc-publish`
Reviewed By: jvillard
Differential Revision: D24728644
fbshipit-source-id: c0006a8dd
Summary:
The problem in Reporting.ml:log_issue_from_summary is that it merely
checks the presence of `SuppressLint` annotation on method's body to
decide whether to log or not the issue. This means that regardless of
issue types specified in `SuppressLint`, all issues on such method will
get blocked.
Here we fix that.
Reviewed By: ngorogiannis, mityal
Differential Revision: D24726604
fbshipit-source-id: c9cae3833
Summary:
This diff glues the previous work together.
The ClassLevelAnalysis finds list of provisional violation, builds the
graph based on them, and outputs this graph as a separate issue.
Reviewed By: artempyanykh
Differential Revision: D24682802
fbshipit-source-id: 8174da91a
Summary:
When exceptions are used due to the lack of goto, use `raise_notrace`
instead of `raise` to avoid the overhead of populating the backtrace.
Reviewed By: ngorogiannis
Differential Revision: D24630525
fbshipit-source-id: c5051d9c4
Summary:
Adding quotes is needed only to avoid clashes between LLVM integer
literals and anonmous value names.
Reviewed By: ngorogiannis
Differential Revision: D24630527
fbshipit-source-id: 97339740c
Summary:
The implementation in Context, in terms of Fol.Term and Fol.Formula,
can now be used instead of Ses.Equality, implemented using
Ses.Term. The Ses modules can now be removed.
Reviewed By: jvillard
Differential Revision: D24532362
fbshipit-source-id: cee9791b7
Summary:
Adapt the solver implementation from Ses.Equality to Context, and use
the interface of Fol.Context.
Reviewed By: jvillard
Differential Revision: D24532348
fbshipit-source-id: 2c6d41669
Summary:
This change is what makes the annotation graph a _graph_.
Now we can detect places when adding one annotation causes an issue that can be
fixed by adding another annotation.
Reviewed By: artempyanykh
Differential Revision: D24650979
fbshipit-source-id: b8452b822
Summary:
In the previous diff we introduced
AnnotatedNullability.is_annotatable_as_nullable method.
Lets now use it in all places where we issue ProvisionallyNullable
annotation.
This will lead to more precise nullability graph (without attempts to
annotate primitives).
Reviewed By: artempyanykh
Differential Revision: D24650951
fbshipit-source-id: 8ea0bb97d
Summary:
This change is on par with the logic that we already have for methods
and method params.
In this logic, we explicitly distinct class under analysis & the
external class when fetching AnnotatedNullability (we needed this to support
various Nullsafe modes as well).
Here we use the same approach for fields.
NOTE: this is not intended to work with nested classes just yet.
Reviewed By: artempyanykh
Differential Revision: D24650934
fbshipit-source-id: f555bcc3f
Summary:
:
New flag (equivalent to --clang-biniou-file) to pass in AST to
frontend.
Passing in json files has the big advantage of emitting line numbers
on frontend AST errors.
Reviewed By: jvillard
Differential Revision: D23814358
fbshipit-source-id: 0ad0452ff
Summary: Cleanup `Typ` by moving all constant types to `StdTyp`. Also remove `Typ.typ` as it's just `Typ.t` now.
Reviewed By: jberdine
Differential Revision: D24620397
fbshipit-source-id: 4764f87ef
Summary:
Now we have all pieces of information needed to build the annotation
graph (to be finished as a follow up).
This diff utilizes the same approach that is done when we calculate node
promotions:
1/ AssignmentRule and DereferenceRule know that some issues are related
to provisional annotations and expose this information.
2/ ClassLevelAnalysis collects all the issues, extract violations from
them, and outputs them.
Next step will be changing the output to the meta-issue printing the
annotation graph in json.
Reviewed By: artempyanykh
Differential Revision: D24621410
fbshipit-source-id: c240da3aa
Summary:
In the previous diffs, we introduced
AnnotatedNullability.ProvisionallyNullable. This is a symmetric change
introducing the same for Nullability.t
Note how ProvisionallyNullable is made `is_nonnullish`. This means that
if we run nullsafe in --nullsafe-annotation-graph mode, the following
should start happening:
1/ A lot of new issues will be recorded - every time a local method or
non-null param is dereferenced etc.
2/ But all of those new issues will be filtered by corresponding Rules
(e.g. AssignmentRule). So those issues will not manifest to user-visible
errors. However, now we are capable to see and analyse those hidden
issues in ClassLevelAnalysis. This is exactly what we will be doing in
follow up diffs.
Note that the place of ProvisionallyNullable in the hierarchy is
somewhat arbitraily. It is important to make it less pri then Nullable -
but when it comes to comparing with other "nonnullish" modes - we can
tweak the behavior later on.
Reviewed By: artempyanykh
Differential Revision: D24621411
fbshipit-source-id: 3b99e5e55
Summary:
The fact that we did not preserve all joins (and used only the first
one) was a shorcut since the origin is used only for reporting, and
reporting the info about left joinee is enough for practical purposes.
Hovewer, to support annotation graph, we need all joinees.
This diff is a no-op since we use only the first one currently.
Reviewed By: artempyanykh
Differential Revision: D24621412
fbshipit-source-id: 8fe1174e7
Summary:
This was perhaps needed at some point, but now there is no need in this.
See the next diff that refactors InferredNullability so we store all
joinee results there.
Reviewed By: artempyanykh
Differential Revision: D24621413
fbshipit-source-id: d6f406b87
Summary:
This is the basic building blocks for the future annotation graph. This
diff introduces the first abstraction to be iterated on.
Reviewed By: artempyanykh
Differential Revision: D24621414
fbshipit-source-id: 19acdf216
Summary:
Before we were creating a fresh internal value when we were constructing `folly::Optional`. This diff models `folly::Optional` constructor more precisely by copying the given value.
There was also a missing dereference in the model of `value_or`
Reviewed By: jvillard
Differential Revision: D24621016
fbshipit-source-id: c86d3c157
Summary:
The global type environment is loaded in all analysis workers, so it is best to minimise its memory footprint. `MaxSharing` does a great job at this but
- it is very slow
- it may be involved in observed segfaults, since it uses potentially unsafe operations
This diff replaces `MaxSharing` with a post-facto poor-man's hashcons pass through the parts involved in a java type environment. It is not as efficient as `MaxSharing` at reducing footprint, but it's much faster.
Reviewed By: jberdine
Differential Revision: D24590400
fbshipit-source-id: c37100325
Josh Berdine
Mitya Lyubarskiy
Jules Villard
Daiva Naudziuniene
Artem Pianykh
Ezgi Çiçek
Martin Trojer
Nikos Gorogiannis