Summary:
The SLEdge internal first-order theory solver targets the "word
problem", where a query has the form `C ⊢ L` where `C` is a
conjunction of literals and `L` is a single literal. This can be
abused to implement a naive SMT solver using an expansion to
disjunctive-normal form and checking `C ⊢ false` for each branch `C`
of the DNF. This is not useful as an SMT solver, but can be used for
testing.
Reviewed By: ngorogiannis
Differential Revision: D23459524
fbshipit-source-id: 5483e5a84
Summary: Formula.disjuncts was a quickly written approximation of DNF.
Reviewed By: ngorogiannis
Differential Revision: D23459513
fbshipit-source-id: 79fd60a7b
Summary:
It was incorrect in case any but the first of of the Formula.disjuncts
was inconsistent.
Reviewed By: ngorogiannis
Differential Revision: D23459519
fbshipit-source-id: 394677e38
Summary:
The only use of the ill-specified Sh.with_pure function is to ignore
the pure part when computing free variables. So add an argument to
Sh.fv to achieve that explicitly and remove Sh.with_pure.
Reviewed By: ngorogiannis
Differential Revision: D23459517
fbshipit-source-id: 8767799ca
Summary:
Strengthen normalization performed by Term and Formula constructors to
eliminate literal 0 subterms and true or false subformulas, as well as
cases where subterms or subformulas are either equal or opposite.
This strengthens the ability of Context.implies to prove formulas that
involve embedding or projecting between terms and formulas, as the
added normalization sometimes reduces if-then-else formulas to
literals that are then directly provable.
Reviewed By: ngorogiannis
Differential Revision: D23459512
fbshipit-source-id: 6d4d90399
Summary:
The dune build info embedded into executables is broken with dune <
2.7 and an flambda compiler.
Reviewed By: ngorogiannis
Differential Revision: D23459510
fbshipit-source-id: 18b3e3e15
Summary: Given the brittleness of DB-indexing over marshalled values (one example exposed in D23191601), the serializer "for comparison" must be removed. Its only use is for source files, and these have an obvious, trivial (and possibly faster and less space hungry) protocol.
Reviewed By: jberdine
Differential Revision: D23499481
fbshipit-source-id: 57ad0ced6
Summary: Given the brittleness of DB-indexing over marshalled values (one example exposed in D23191601), the serializer "for comparison" must be removed. Serialized procnames are no longer used as keys, so their serializer can be converted to the one which preserves sharing (saving some space in the process).
Reviewed By: jberdine
Differential Revision: D23425123
fbshipit-source-id: 9c82da778
Summary:
Store model summaries in the `model_specs` database table instead of in spec files.
This table is populated when a new database is created by loading a dump of the `specs` table in the models database. This avoids the perf and reliability implications of ATTACHing the same, non-read-only models-DB by many processes.
- `BiabductionModels` is moved into `IR` so that `JsonReports` can access it.
- The binary `sqlite3` is now required on the host compiling infer.
Reviewed By: skcho
Differential Revision: D23191601
fbshipit-source-id: 1532481ee
Summary: Since the unique string ID used as a key is also human-readable, remove the now-redundant `proc_name_hum` field, which is only used for debug purposes anyway.
Reviewed By: jberdine
Differential Revision: D23446223
fbshipit-source-id: 5027066ee
Summary: There is still a bug in using marshalled values as keys (exposed up the diff stack) where structurally equal procnames get serialised to distinct keys. This diff addresses that bug by using the existing functionality for string unique IDs.
Reviewed By: ezgicicek
Differential Revision: D23133761
fbshipit-source-id: 3cbafb51b
Summary: There is no reason to write back to the database here, as the resulting procdesc is anyway stored in the summary. This is a source of non-determinism.
Reviewed By: skcho
Differential Revision: D23500220
fbshipit-source-id: 7434e6239
Summary: We don't report and IO Cost and are not planning to do so in the near future. Let's remove it from cost kinds.
Reviewed By: ngorogiannis
Differential Revision: D23499160
fbshipit-source-id: 7281da3af
Summary:
As title.
Facebook
Found this case by examining db.
>
D23394545
Time complexity of `_registerTabPreloadables` has **decreased** from `Top` to `O(1)`. Please make sure this is an expected change. You can inspect the trace to understand the complexity increase:
Reviewed By: ezgicicek
Differential Revision: D23448099
fbshipit-source-id: 108fd1ef2
Summary:
This diff adds translation of `dictionaryWithObjects:forKeys:count:`. In the previous implementation it was
translated as if it was `dictionaryWtihObjectsAndKeys:`, but their function parameters are different.
In this diff, it translates an array literal `NSDictionary* a = @ [ @"firstName": @"Foo", @"lastName":@"Bar" ];` to
```
n$1=NSString.stringWithUTF8:(@"firstName")
n$2=NSNumber.stringWithUTF8:(@"Foo")
n$3=NSNumber.stringWithUTF8:(@"lastName")
n$4=NSNumber.stringWithUTF8:(@"Bar")
temp1[0]:objc_object*=n$1
temp1[1]:objc_object*=n$3
temp2[0]:objc_object*=n$2
temp2[1]:objc_object*=n$4
n$3=NSDictionary.dictionaryWithObjects:forKeys:count:(temp2:objc_object* const [2*8], temp1:objc_object*const [2*8], 2:int)
```
where `temp` is an additional local variable declared as array.
See,
https://developer.apple.com/documentation/foundation/nsdictionary/1574184-dictionarywithobjects?language=objchttps://developer.apple.com/documentation/foundation/nsdictionary/1574181-dictionarywithobjectsandkeys
{F316854542}
Reviewed By: skcho
Differential Revision: D23447042
fbshipit-source-id: 14b7c3f2b
Summary: Added a model for copy constructor for `std::function`. In most cases, the SIL instruction `std::function::function(&dest, &src)` gives us pointers to `dest` and `src`, hence, we model the copy constructor as a shallow copy. However, in some cases, e.g. `std::function f = lambda_literal`, SIL instruction contains the closure itself `std::function::function(&dest, (operator(), captured_vars)`, hence, we need to make sure we copy the right value.
Reviewed By: ezgicicek
Differential Revision: D23396568
fbshipit-source-id: 0acb8f6bc
Summary:
Move Sqlite registered statements inside the functions that use them, since these are only ever used in one place.
Also, reformat some SQL.
Also, make `mark_all_source_files_stale` use an un-prepared statement, as it is used at most once per run, wasting resources if registered.
Reviewed By: skcho
Differential Revision: D23423844
fbshipit-source-id: 07362d19c
Summary: We only added suffix-stripped prefixes of props but this causes FPS if a component declares props that actually contain suffixes since we strip them when we are adding builder calls. The fix is to add both normal and stripped versions.
Reviewed By: skcho, Katalune
Differential Revision: D23375405
fbshipit-source-id: e99cb4dd8
Summary:
This diff finishes the migration from the specialization of methods that take blocks as arguments. Here we delete all the old code and change the way we model dispatch functions so that the tests pass.
- Remove the code for specializing the methods in biabduction.
- Remove the call flags `cf_with_block_parameters` that was only used in this algorithm.
- Removes models for dispatch functions.
- Adds models for dispatch functions as program transformation only in biabduction. To be added in other checkers in the future.
Reviewed By: ngorogiannis
Differential Revision: D23345342
fbshipit-source-id: b5e8542ce
Summary:
This preanalysis in general aims to create specialized clones of methods that have blocks as arguments and that are called with concrete closures, and then call these clone methods instead of the original ones.
One complication is what happens with the captured variables in the closure. What we do is we add them to the formals of the cloned method and passed them through to the concrete blocks.
We do this transformation in two steps:
1. Go through all the callers of methods with blocks as parameters, and create the clone methods. In this preanalysis we only create the attributes for the new method, not the code. We also update the call instructions in the callers to represent a call to the cloned method with updated arguments: we don't need to pass closures arguments anymore, we instead pass the captured variables as new arguments.
2. We add the corresponding code to the newly created clones: this means swapping the call to the block variable with a call to the corresponding block. Moreover, we add some of the new formals (that correspond to the captured variables) to the arguments of the call.
This diff implements step 1 of the analysis. The next diff D23216021 implements step 2.
Reviewed By: ngorogiannis
Differential Revision: D23109204
fbshipit-source-id: 91a5eb16b
Summary: There was a mismatch between formals and actuals in `std::function::operator()` because we were not passing the first argument corresponding to the closure.
Reviewed By: ezgicicek
Differential Revision: D23372104
fbshipit-source-id: d0f9b27d6
Summary: When we evaluate lambdas in pulse, we create a closure object with `fake` fields to store captured variables. However, during the function call we were not linking the captured values from the closure object. We address this missing part here.
Reviewed By: jvillard
Differential Revision: D23316750
fbshipit-source-id: 14751aa58
Summary:
Report errors found by running Topl on top of Pulse, when using
--topl-pulse. Topl tests now run on top of Pulse.
Reviewed By: jvillard
Differential Revision: D23030771
fbshipit-source-id: 8770c2902
Summary:
Two issues are fixed
1. For this diff, when the condition `curr_langauge_is Java` is removed in some part of the analysis, some c bufferoverrun tests are broken. This is fixed in this diff by inspecting if we are dealing with a `Size` alias referring to an `objc_internal_collection_array`.
2. Previously, when we are modifying mutable array in a loop, e.g. adding element to the array or removing element from the array, we are unable to give an estimable size of the array after exiting the loop. This is now fixed, and the corresponding FPs are resolved.
Reviewed By: skcho
Differential Revision: D23342350
fbshipit-source-id: 200f5261c
Summary:
This diff fixes `--reanalyze` option that is to reanalyze specific procedures by removing their
summaries. It was broken because it tried to store an empty summary with `Status.Analyzed`.
Reviewed By: ezgicicek
Differential Revision: D23344633
fbshipit-source-id: 1c4eca6c0
Summary:
The generated code used to contain Prune statements that had boolean
connectives in their conditions. After this commit, all conditions
should have no boolean connective (LNot, LOr, LAnd) at top-level; that
is, prune conditions should be atomic.
The main motivation behind this change is that (a) frontends follow this
convention, and (b) Pulse assumes this convention.
Reviewed By: jvillard
Differential Revision: D23022273
fbshipit-source-id: 1313328e4
Summary:
In the previous diffs, we implement enumerator in order to estimate the cost of for-each loop in ObjC, but when we have FP case when enumerator is used not in for-each loop. For example, the following code has top cost before the fix.
```
void nsarray_enumerator_linear_FP(NSArray* array) {
id obj;
NSInteger sum = 0;
NSEnumerator* enumerator = [array objectEnumerator];
while (obj = [enumerator nextObject]) {
sum += (NSInteger)obj;
}
}
```
Reviewed By: skcho
Differential Revision: D23294895
fbshipit-source-id: 50c7b359f
Summary:
When normalizing discovers new linear arithmetic facts in
`normalize_linear_eqs` we go around once more. Do the same when atoms
become linear equalities.
Reviewed By: skcho
Differential Revision: D23264425
fbshipit-source-id: b355875f3
Josh Berdine
Ezgi Çiçek
Nikos Gorogiannis
Sungkeun Cho
Qianyi Shu
Daiva Naudziuniene
Dulma Churchill
Radu Grigore
Jules Villard