Summary:
the predicate to check that a decl is const was not working for VarDecl.
This diff fixes this
Reviewed By: jvillard
Differential Revision: D14106798
fbshipit-source-id: 1f6c24113
Summary:
- docstrings
- mli
- split `get_control_maps`: `get_loop_head_to_source_nodes` is used both by Cost and Hoisting. If using both analyzers, it is called twice whereas it could be shared (which is done later in the stack of diffs).
Reviewed By: ezgicicek
Differential Revision: D14258372
fbshipit-source-id: 29addddb7
Summary:
:
Since traces are attached to symbols, currently it will make no difference.
Calling `subst` on `Top` or on constant is constant-time.
But I need this to record `Call` trace elements for `Top`.
Reviewed By: ezgicicek
Differential Revision: D14249265
fbshipit-source-id: d3aa4ac9e
Summary:
This diff differentiates proof obligations by allocsites. Sizes and
offsets of arrays were joined when making proof obligations.
Reviewed By: mbouaziz
Differential Revision: D14163149
fbshipit-source-id: cb6608c16
Summary:
The Eradicate backend is reporting nullable type errors, that are not always necessarily leading to null pointer exceptions.
For example, the analysis is designed to be consistent with the Java type system and report on the following code:
String foo(boolean test) {
Object object = test ? new Object() : null;
if (test) {
return object.toString(); // the analysis reports here
}
}
even though the code will not crash.
In order to make this aspect clear, this diff renames the warnings `Null Method Call` and `Null Field Access` into `Nullable Dereference`
Reviewed By: ngorogiannis
Differential Revision: D14001979
fbshipit-source-id: ff1285283
Summary:
`Utils.with_intermediate_temp_file_out` is conceptually simpler. Plus,
this removes a dependency on Unix.flock, which is not portable under
Windows.
Pull Request resolved: https://github.com/facebook/infer/pull/1066
Differential Revision: D14208138
Pulled By: jvillard
fbshipit-source-id: 7587007e5
Summary:
This diff adds a constant to the set of widening thresholds if the
constant is compared to an abstract value in condition expressions.
Each abstract value has its own set of thresholds.
Reviewed By: mbouaziz
Differential Revision: D14147150
fbshipit-source-id: ca0db34d4
Summary: We don't want to use Cost analysis results when `Config.hoisting_report_only_expensive` is false
Reviewed By: ezgicicek
Differential Revision: D14124555
fbshipit-source-id: e809bb80a
Summary:
In this diff, it avoids a precision-losing pruning, which was needed
to keep effects of assume commands.
```
unsigned int c = a + b; // (1)
if (c > 0) { // (2)
char result[c];
result[c - 1] = 0; // (4)
}
```
For example, in the example, `c` is assigned by `[a+b,a+b]` at (1),
then it tried to prune the lower bound of `c` to 1 at (2) while losing
precision, in order to say `c - 1` at (4) is safe in terms of integer
underflow. Instead, it could not say that `c - 1` is smaller than `c`
in the buffer access, because the former is analyzed to `[0,a+b-1]` and
the latter `[1,a+b]` at (4).
Now, the situation has changed. By adopting conditional proof
obligation (D13749914), the FP of integer overflow can be suppressed
without the precision-losing pruning.
Reviewed By: mbouaziz
Differential Revision: D14122770
fbshipit-source-id: 634744e99
Summary: Since Inferbo's current min/max domain can keep only a single symbol, e.g. min(constant, symbol) , it loses precision when trying to prune a value including multiple symbols.
Reviewed By: ezgicicek
Differential Revision: D14099399
fbshipit-source-id: 71d677b75
Summary: Record where each symbol in a polynomial is coming from: either a loop, function call or a modeled call.
Reviewed By: mbouaziz
Differential Revision: D14047420
fbshipit-source-id: 56d0bd926
Summary: It keeps alias of simple plus/minus arithmetic in order to pruning the value of "++i" expression.
Reviewed By: mbouaziz
Differential Revision: D14080230
fbshipit-source-id: d3af32a32
Summary:
- Decouple analysis/reporting a little bit
- Avoids carrying the summary while computing stuff
Depends on D14028249
Reviewed By: ngorogiannis
Differential Revision: D14028673
fbshipit-source-id: 18e7298f8
Summary: In SIL, Java's array member is a pointer to an array, while C++'s is the array itself. This diff differentiate them in evaluating abstract locations.
Reviewed By: ezgicicek, mbouaziz
Differential Revision: D14021451
fbshipit-source-id: 00f14fe3b
Summary:
`AnalyzerNodesBasicCost` is just mapping instructions to abstract costs, it doesn't need to use AI.
Also it was keeping a map (node -> cost) for each node, this is completely removed.
Depends on D14028171
Reviewed By: ddino
Differential Revision: D14028249
fbshipit-source-id: 63f39261a
Summary:
- There is no need to use AI to compute a dot product: let's just fold over all nodes, but still do it in order (using the WTO) to report at the right place
- The previous version was computing a dot product on nodes for each node, which was quadratic, the new version is linear
- Report only once, the first time the threshold is reached (if in a loop, report at the loop head)
Reviewed By: ddino
Differential Revision: D14028171
fbshipit-source-id: b4a840c6e
Summary:
The former Makefile does not work when $(LN) is cp, because
it tries to copy a binary that has not been installed yet
Pull Request resolved: https://github.com/facebook/infer/pull/1060
Differential Revision: D14044696
Pulled By: jvillard
fbshipit-source-id: f89d9db81
Ezgi Çiçek
Nikos Gorogiannis
Mehdi Bouaziz
Dino Distefano
Sungkeun Cho
Jeremy Dubreil
Boris Yakobowski
Boris Valkov