Summary: For Remodel-generated class (https://github.com/facebook/remodel), their properties are stored/loaded at internal fields named "_<property name>". This diff prepends "_" to property names when writing field info to the type environment when the field is of Remodel-generated class.
Reviewed By: ezgicicek
Differential Revision: D28541495
fbshipit-source-id: d0a1e5a4f
Summary:
This diff adds fields for ObjC properties to the type environment. For example,
```
property type fieldname;
```
when the property name is "fieldname", this diff adds a struct field of the same name.
The missing type information were problematic in inferbo, since its semantics depend on types.
Reviewed By: ezgicicek
Differential Revision: D28421998
fbshipit-source-id: e24059846
Summary:
Follow similar approach as in the translation of dictionary literal to insert load instruction to catch nil insertion into collection issues. The missing load instruction was causing false negatives in biabduction. This will also help Pulse to catch nil insertion into collection issues for array literals.
Facebook
Reviewed By: skcho
Differential Revision: D28442642
fbshipit-source-id: b530ac21b
Summary: This diff copies each field values inside setter/getter of ObjC++.
Reviewed By: da319
Differential Revision: D28413584
fbshipit-source-id: 4c663fc9e
Summary:
Implements the translation of most clang atomic builtins to SIL, including those used in `stdatomic.h`. It does not attempt to model the atomicity of the operations, since I don't know of any way Infer can represent that. I didn't bother implementing the rarely used min/max builtins, so they're left as `BuiltinDecl` calls.
This is my first major OCaml project, so any feedback is appreciated!
Also, CONTRIBUTING.md says to update the [facebook-clang-plugins](https://github.com/facebook/facebook-clang-plugins) submodule, but it doesn't seem to be a submodule anymore, and the code has diverged from that repo. Should I still make a PR over there?
Pull Request resolved: https://github.com/facebook/infer/pull/1434
Reviewed By: skcho
Differential Revision: D28118300
Pulled By: jvillard
fbshipit-source-id: 121c4ad25
Summary: To be fair that doesn't seem to matter at all, with no test affected.
Reviewed By: ngorogiannis
Differential Revision: D28091608
fbshipit-source-id: 172bd2ff1
Summary:
Just moving stuff around.
This is possibly useful for making Pvar depend on ProcAttributes for
other things, eg checking if a pvar is captured by a procedure (which
would be awkward to have in the API of ProcAttributes and not Pvar).
Overall it forced me to move a few other things around in a way that I
feel makes more sense anyway.
Reviewed By: skcho
Differential Revision: D28091497
fbshipit-source-id: 367a1f17c
Summary:
This diff introduces [ISys.file_exists] that is similar to [Sys.file_exists_exn], but returns
[false] when the result is known, instead of raising an exception.
Reviewed By: jvillard
Differential Revision: D28059863
fbshipit-source-id: d54851cfb
Summary:
This diff avoids dereference of C struct, in its frontend and its semantics of Pulse. In SIL, C
struct is not first-class value, thus dereferencing on it does not make sense.
Reviewed By: ezgicicek
Differential Revision: D27953258
fbshipit-source-id: 348d56338
Summary: This diff copies each field values inside setter/getter of ObjC.
Reviewed By: ezgicicek
Differential Revision: D27940521
fbshipit-source-id: 9977cae75
Summary:
This diff does refactoring for the following diff.
* Define Mangled.return_param and Mangled.is_return_param and use it instead of
Ident.name_return_param.
* Share common code from objc_setter and objc_getter
* Move struct_copy to CStructUtils.ml
Reviewed By: da319
Differential Revision: D27940125
fbshipit-source-id: 84eb3109b
Summary:
Previously we were only taking constexpr into account on constructors.
Add this info to ProcAttributes.t instead by exporting it from the
plugin for all functions.
This allows SIOF to take constexpr into account in more cases as it's not
always good at capturing which functions *can* be constexpr-evaluated,
which caused false positives.
Delete now-useless is_constexpr in constructor types. This generated the
changes in frontend tests.
Some minor renamings of variants of is_const_expr -> is_constexpr.
Reviewed By: da319
Differential Revision: D27503433
fbshipit-source-id: 3d1972900
Summary: We have been referring to the arguments of a function call as "params". This has been bothering me. Let's fix it!
Reviewed By: ngorogiannis
Differential Revision: D27649158
fbshipit-source-id: 10e0b28cb
Summary:
This was added in C++14. Was investigating how SIOF dealt with this but
it turns out it already does the right thing as the translation unit of
global variable templates shows up as the place they are instantiated
(not the one where they are declared), which works well for SIOF
checking.
Reviewed By: da319
Differential Revision: D27500998
fbshipit-source-id: b8b9b9c48
Summary:
This is better suited than the generic "cGeneral_utils", and saves
exporting one of them too.
Reviewed By: da319
Differential Revision: D27500933
fbshipit-source-id: f4224f63b
Summary:
This diff handles live variables in catch blocks. To do that, this diff adds another metadata,
`CatchEntry`.
Domain change: The domain is changed to
```
(normal:variables) x (exn:try_id->variables)
```
`exn` is a map from try-catch-id to a set of live variables that are live at the corresponding entry
of catch blocks.
Semantics change: It is a backward analysis.
* on `CatchEntry`: It updates `exn` with `try_id` and current `normal`.
* on `Call`: As of now, we assume all function calls can raise an exception. Therefore, it copies
all live variables in `exn` to `normal`.
* on `TryEntry`: It removes corresponding `try_id` from `exn`.
Reviewed By: jvillard
Differential Revision: D26952755
fbshipit-source-id: 1da854a89
Summary: This diff adds TryEntry and TryExit statements to the entry and exit of C++ `try` block, in order to handle exceptional control flow better in analyses.
Reviewed By: da319, jvillard
Differential Revision: D26946188
fbshipit-source-id: 33f4ae9e7
Summary:
Update Infer to LLVM (clang) 11.1.0.
Infer/clang now uses the LLVM 'monorepo' release, simplifying the download script.
Some changes done to how/when ASTExporter mangles names, this to avoid the
plugin hitting asserts in the clang code when mangling names.
Reviewed By: jvillard
Differential Revision: D27006986
fbshipit-source-id: 4d4b6ba05
Summary:
We use `procedure_name` which is coming from `Procname.get_method` in explanation of cost issues. For blocks, procedure name includes a prefix `objc_block` and a suffix with `_x` where x is the block counter. However, displaying this name to the user is not pretty. Especially when we have nested blocks, procedure name looks like `objc_blockobjc_blockdirectUIMessageFromContentAndMetadata_10_23`.
This diff drops the block index suffix and replaces `objc_block` with a prettier version `^`(signifying block).
so instead, in the cost report, we will have `^^blockdirectUIMessageFromContentAndMetadata`.
Reviewed By: skcho
Differential Revision: D26945333
fbshipit-source-id: 9d135423c
Summary: Variables captured by reference do not have correct type in objc blocks. They are missing one reference. This diff sets the correct type of captured reference variables inside procdesc, similarly as we already have for cpp lambdas. The translation of block's body will then take into account the type of captured variable from procdesc.
Reviewed By: ezgicicek
Differential Revision: D26945575
fbshipit-source-id: 06a9d9cc6
Summary: In ObjC, when a method is called on nil, there is no NPE, the method is actually not called and the return value is 0/false/nil. There is an exception in the case where the return type is non-POD. In that case it's UB and we want to report an error.
Reviewed By: jvillard
Differential Revision: D26815687
fbshipit-source-id: 8126414ab
Summary:
ClangWrapper.ml was skipping clang commands that didn't capture
by default. It was using the 'skip_analysis_in_path_skips_compilation'
flag to NOT skip commands. This is a confusing use of that flag.
Default should be to run clang (in case it does something useful),
and a new flag to disable this.
Reviewed By: ngorogiannis
Differential Revision: D26459100
fbshipit-source-id: 7f2e9a269
Summary: In Objective-C, `static const int var = ..` is not recognized as ICE (integral constant expression) unlike C++. To handle such loads better, this diff adds a check for `constant_global_array` as a workaround.
Reviewed By: skcho
Differential Revision: D26369461
fbshipit-source-id: e2dae11f1
Summary:
This diff resets the id generator before generating ObjC getter/setter, so parsed results are the
same without regard to the generation order. Note that the order may change when we change the type
of Procname.t since their hash values are used for the hash set of procnames.
Reviewed By: ngorogiannis
Differential Revision: D26277348
fbshipit-source-id: a66d77845
Summary:
When a union type has a member function in C++, it is parsed as `CppClass`. However, sometimes we may want
to distinguish normal cpp classes and union classes. This diff adds a field to the type name.
Reviewed By: jvillard
Differential Revision: D26125619
fbshipit-source-id: 44a6e8192
Summary: This diff fixes incorrect order of statements on `*p = !b;`.
Reviewed By: jvillard
Differential Revision: D26125069
fbshipit-source-id: 9dcefbd34
Summary:
This diff fixes incorrect order of statements on assignments.
In the translation of `LHS=RHS;`, if `RHS` is a complicated expression that introduced new nodes, eg a conditional expression, some load statements for `LHS` came after its usage. To avoid the issue, this diff forces it to introduce new nodes for `LHS`.
Reviewed By: jvillard
Differential Revision: D26099782
fbshipit-source-id: 27417cd99
Summary: This diff adds an additional parameter of struct return type in ObjC's methods. The additional parameter had been supported only in C/C++ functions/methods for 5 years (D2865091 (ec80d40bdd)). If there is no specific reason not to do that, let's do it and fix the incorrect frontend translations.
Reviewed By: jvillard
Differential Revision: D26049748
fbshipit-source-id: 414b3011f
Summary:
When there was an assignment of C struct, `x = y;`, it was translated to the statements of load and store.
```
n$0 = *y
*x = n$0
```
However, this is incorrect in Sil, because a struct is not a value that can be assigned to registers. This diff fixes the translation as assignments of each field values :
```
n$0 = *y.field1
*x.field1 = n$0
n$0 = *y.field2
*x.field2 = n$0
...
```
It copies field values of C structs on:
* assign statement
* return statement
* declarations.
It supports nested structs.
Reviewed By: jvillard
Differential Revision: D25952894
fbshipit-source-id: 355f8db9c
Summary:
This diff fixes a bug in the translation of an empty for-loop. When both initialization and
incrementation statements did not introduce a new node, the frontend generated an incorrect results
where the for-loop was unreachable from the entry node.
Fixes https://github.com/facebook/infer/issues/1374
Reviewed By: jvillard
Differential Revision: D25912142
fbshipit-source-id: 15b65cb84
Summary:
When the body of the loop doesn't created a node then they don't get
wired correctly to the rest of the loop and end up dangling. Force node
creation to fix that.
Fixes https://github.com/facebook/infer/issues/1373
Reviewed By: ezgicicek
Differential Revision: D25804185
fbshipit-source-id: 85108bdd9
Summary:
We need to make sure a node is created to avoid instructions appearing
in the wrong order in the final CFG.
Reviewed By: da319
Differential Revision: D25784405
fbshipit-source-id: 3ef27d712
Summary:
In `Config`, the lists generated by `mk_string_list`, `mk_path_list`, `mk_rest_actions` are reversed implicitly, which made it hard for developers to use them correctly. What the previous and this diff will do is to change the list variables of the `Config` to not-reversed one.
* diff1: First diff adds `RevList` to distinguish reversed lists explicitly. All usages of the reversed list should be changed to use `RevList`'s lib calls.
* diff2: Then this diff will change types of `Config` variables to not-reversed, normal list.
Reviewed By: ngorogiannis
Differential Revision: D25562303
fbshipit-source-id: 4cbc6d234
Summary:
In `Config`, the lists generated by `mk_string_list`, `mk_path_list`, `mk_rest_actions` are reversed implicitly, which made it hard for developers to use them correctly. What this and the next diff will do is to change the list variables of the `Config` to not-reversed one.
* diff1: First this diff adds `RevList` to distinguish reversed lists explicitly. All usages of the reversed list should be changed to use `RevList`'s lib calls.
* diff2: Then the next diff will change types of `Config` variables to not-reversed, normal list.
Reviewed By: ngorogiannis
Differential Revision: D25562297
fbshipit-source-id: b96622336
Summary:
The frontend of ObjC regarding to captured variable was incorrect: it set capturing mode as
by-reference always, but it actually translaged as if all captured variables were passed with
by-value. This diff fixes this based on the document.
https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/Blocks/Articles/bxVariables.html
* global variable: by reference
* local variable: by value
* `static` local variable: by reference
* `__block` local variable: by reference
* parameter: by value
Reviewed By: jvillard
Differential Revision: D25306122
fbshipit-source-id: ec499d705
Summary:
This diff uses Pvar.t in CapturedVar.t, so that
* it can include additional info in Pvar.t
* it can avoid some `Pvar.mk` calls when using the captured variables
Reviewed By: jvillard
Differential Revision: D25331763
fbshipit-source-id: 4e0c2ab4a
Sungkeun Cho
Daiva Naudziuniene
kmh11
Jules Villard
Ezgi Çiçek
Martin Trojer