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: Can be useful, especially to dump all the summaries as json.
Reviewed By: skcho
Differential Revision: D24504253
fbshipit-source-id: 845e7d657
Summary: Gradle produces a number of compilation units which are currently captured sequentially. This diff parallelizes this step.
Reviewed By: jvillard
Differential Revision: D23930978
fbshipit-source-id: d71c22ba3
Summary:
This can be used by additional tooling for further analysis (e.g.
codemods, autofixes, etc).
Reviewed By: ngorogiannis
Differential Revision: D23987694
fbshipit-source-id: b9fa343ac
Summary:
If the issue is related to the use of an unvetted third party method
that can not be trusted, we record this fact.
Reviewed By: ngorogiannis
Differential Revision: D23705626
fbshipit-source-id: 851328fe5
Summary: This diff adds trace field for autoreleasepool size. Unlike to the other checkers, eg inferbo and operation cost, the autoreleasepool size checker should have traces for constants.
Reviewed By: ezgicicek
Differential Revision: D23678084
fbshipit-source-id: 35e6cf5f5
Summary:
For complexity issues from O(m) to O(n), we only include the trace of the current complexity O(n). However, this makes it difficult to understand what the original complexity O(m) was. Especially in fixed issues where n=1, we only get a constant cost with no trace attached, so it is difficult to see how the symbol m disappeared.
This diff includes the traces for the previous cost in the cost issues.
Reviewed By: skcho
Differential Revision: D23680360
fbshipit-source-id: 3f2b21b20
Summary: Polynomial category zero corresponds to unreachable but "zero" is a misnomer and rather confusing. Let's fix it.
Reviewed By: skcho
Differential Revision: D23597735
fbshipit-source-id: f0c96ed26
Summary:
This diff adds a new experimental checker for detecting size of objects in autorelease pool in ObjC. The basic mechanism is almost the same with the previous cost calculation:
* Autorelease pool size is increased at explicit `autorelease` call
* Autorelease pool size is set as zero by the `autoreleasepool` block.
While it only supports the explicit calls as of now, we will extend the checker to handle more cases in the following diffs.
Reviewed By: ezgicicek
Differential Revision: D23473145
fbshipit-source-id: 416488176
Summary:
This diff extends the cost_item json format to print the autoreleasepool_size field. Not yet, there
is no semantics for that code kind, so the results will always be zero with no traces.
Reviewed By: ezgicicek
Differential Revision: D23540665
fbshipit-source-id: 94442e376
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:
Constructing the report is done by reading all the summaries, and using certain parts thereof. However, the payloads, which typically account for the greatest size, are not used (with the exception of costs).
This diff splits the storage of summaries into analysis and report summaries, and only reads and deserialises the latter for the report phase. This makes a big difference for runs with a large number of procedures.
Reviewed By: jvillard
Differential Revision: D23105072
fbshipit-source-id: 359067a0f
Summary: As per title. Eases next diffs by making Summary the only source of truth for how spec files are accessed/stored.
Reviewed By: ezgicicek
Differential Revision: D22794742
fbshipit-source-id: 0ee20ec1c
Summary: New, experimental for now, integration with buck on Java using the `#infer-java-capture` flavor.
Reviewed By: artempyanykh
Differential Revision: D22187748
fbshipit-source-id: 62cdafe6b
Summary:
Messed up the aggregation of GC stats in the previous commit.
It's cleaner to have GC stats (and analysis time) outside of
BackendStats as the rules for computing them is different than the rest,
eg notice how "analysis time" needed to be corrected at the end of the
run, and similarly for GC stats. Thus, refactor this part.
Also output different aggregations of GC stats: +/max/average.
Reviewed By: skcho
Differential Revision: D22332496
fbshipit-source-id: eefd9dd72
Summary:
New `debug` command takes over from `explore` the `--procedures`, `--source-files` functionality and adds `--global-tenv` for printing the global type environment.
Also, uncrustify printing of type environments.
Reviewed By: jvillard
Differential Revision: D22284807
fbshipit-source-id: 9c6fb0c7a
Summary:
Log stats obtained via `Gc.stat ()` for various phases:
- capture (doesn't include child infer processes created by the build
system)
- analysis
- worker processes of the analysis, aggregated
- reporting phase
- total GC stats for the main infer process
Reviewed By: jberdine
Differential Revision: D22140131
fbshipit-source-id: b0ee39559
Summary:
Extend BasicCost to BasicCostWithReason which contains a record of the form
```{cost: BasicCost.t; proc_name_list: Procname.t list}```
This is done so that we can keep track of top cost function.
So the idea is that 80% of functions with Top cost are caused by calling top-costed callees, i.e. callee's Top cost is simply propagated to its transitive callers, so the aim is to investigate such root callees along with the number of their transitive callers.
Therefore, we create an extension that match `cost` to the root cause function.
This diff only handles the extension. Details about how we update the root cause function is in the next diff.
Reviewed By: skcho
Differential Revision: D22158717
fbshipit-source-id: 6498d904f
Summary:
There is a lot of subtlety in our parsing of buck targets on the command line, that is then just thrown away. Push this one level up, getting rid of the special case where in Clang mode if we only have "normal" targets we don't resolve them.
Also introduce a proper variant for buck target types.
Reviewed By: skcho
Differential Revision: D22160490
fbshipit-source-id: 500c1b12c
Summary:
Better API for creating issue types:
- distinguish hidden/normal/dynamic issue types
- normal issue types should always be documented
- add "TODO" to missing documentation
- dynamic issue types are the only ones that can be created outside of
IssueType.ml
I had to document the new CCBM and the resource leak lab exercise to
keep Help.ml happy, did `make doc-publish`.
Reviewed By: ngorogiannis
Differential Revision: D22118766
fbshipit-source-id: 3d0194518
Summary:
A bug in docusaurus makes relative URLs fail depending on how the page
was accessed, because the URL of a page in docs/ will end in / if
accessed directly or via hyperlink, but that / will be omitted when
clicking on the sidebar. The final / makes all the difference when
interpreting relative URLs so relative URLs are essentially broken.
See https://github.com/facebook/docusaurus/issues/2832 for more details.
This changes URL generation to generate URLs /docs/next/..., and
manually substitute relative URLs that had been written by hand.
Also fix a few other things about outdated links/comments.
Finally, `make doc-publish`.
Reviewed By: dulmarod
Differential Revision: D22117187
fbshipit-source-id: 32e2ba7e1
Summary: Buck uses its own estimate for how many workers to spawn, there is no need to pass our own estimate for capture.
Reviewed By: ezgicicek
Differential Revision: D22065565
fbshipit-source-id: 4c062a9aa
Summary: Pulse has now a better version of this check, so let's delete it.
Reviewed By: ngorogiannis
Differential Revision: D22019247
fbshipit-source-id: 344678225
Summary:
Turns out it was useful, so it is now reborn in OCaml.
Fixes https://github.com/facebook/infer/issues/1262.
Reviewed By: skcho
Differential Revision: D22016185
fbshipit-source-id: 31ccb7540
Summary:
Finish implementing the CLI of the `help` command with these two
functions that can provide more information about checkers.
Reviewed By: ngorogiannis
Differential Revision: D21937175
fbshipit-source-id: da6b3ecee
Summary:
Write documentation for all documented issue types and all user-facing
checkers in the "next" version of the documentation. Next diff shows the
new website.
Reviewed By: dulmarod
Differential Revision: D21934370
fbshipit-source-id: 53315d2b4
Summary:
This provides some of the infrastructure needed for documentation issue
types within infer itself so we can generate the website and keep it up
to date when introducing new issue types.
Basically each issue type has documentation in its datatype in OCaml
now. But, documentation strings can be several pages of text! To avoid
making IssueType.ml even more unreadable, add the option to write
documentation in long form in files in infer/documentation/issues/.
This implements `infer help --help-issue-type` and show-cases how
documentation works for a couple of issue types. Next diff bulk-imports
the current website documentation in this form.
allow-large-files
Reviewed By: skcho
Differential Revision: D21934374
fbshipit-source-id: 2705bf424
Summary:
```
$ infer help --list-issue-types
Format:
Issue type unique identifier:Human-readable version:Visibility:Default severity:Enabled:Checker:Documentation URL (AL only):Linters definition file (AL only)
ARRAY_OUT_OF_BOUNDS_L1:Array Out Of Bounds L1:Developer:ERROR:false:biabduction::
ARRAY_OUT_OF_BOUNDS_L2:Array Out Of Bounds L2:Developer:WARNING:false:biabduction::
ARRAY_OUT_OF_BOUNDS_L3:Array Out Of Bounds L3:Developer:WARNING:false:biabduction::
Abduction_case_not_implemented:Abduction Case Not Implemented:Developer:ERROR:true:biabduction::
...
```
Reviewed By: skcho
Differential Revision: D21934371
fbshipit-source-id: 77df2a40f
Summary:
`infer help` will be used to display information about issue types and
checkers, and to generate the corresponding website documentation. We
can add more things in it over time. The goal is to avoid having to go
read the source code of infer to figure things out that are user-facing.
Reviewed By: ezgicicek
Differential Revision: D21934376
fbshipit-source-id: 2788c5af1
Summary:
- "visibility" (whether an issue to report is something to show the user
or something that is only used for debugging or for detecting other
issues) is an intrinsic property of an issue type and thus belongs in
`IssueType.t`.
- "severity" (warning/error/...) is something that each issue should
have a default for ("a memory leak is by default an ERROR", a
"condition always true is by default a warning"), but can also be
overriden at run-time. Right now only nullsafe uses that capability:
when in "strict mode", some warnings become errors. We can imagine
extending this to other issue types, or even providing config flags to
turn warnings into errors, like compilers often have.
To guess the default severity (since it's dynamic it can be hard to know
for sure!), I tried to find places where it was reported as the source
of truth, but also later diffs test these defaults against our tests (by
removing most of the dynamic changes in severity).
With this diff there are 3 places where severity is set:
1. The default severity in IssueType.t: this is unused for now.
2. The severity from `Exceptions.recognize_exception`: this is
semi-statically determined and, if set, takes precedence over number 3 (which looks wrong to me!)
3. The severity passed to `Errlog.log_issue` when we actually add an
issue to the error log: this is used only when (2) is unset.
The next diffs will make 1 the default, delete 2, and make 3 optional
but override 1 when passed.
Reviewed By: skcho
Differential Revision: D21904538
fbshipit-source-id: a674b42d8
Summary: We do not use an arbitrary threshold to test cost results anymore but instead rely on `cost-issues` which do not have any trace attached. This diff adds traces to `costs-report.json` so that we can test cost issues with traces.
Reviewed By: skcho
Differential Revision: D21858846
fbshipit-source-id: e73321a92
Summary: D21816312 forgot to add the new cost testing mechanism to `fb-performance` and `performance-exlusive` directories. This diff fixes that.
Reviewed By: skcho
Differential Revision: D21837912
fbshipit-source-id: 407dafcd3
Summary:
In order to test cost analysis results, currently we rely on having an arbitrary cost threshold (200) and report issues that exceed this cost. For instance, a cost of 201 is considered expensive and reported as `EXPENSIVE_EXECUTION_TIME` issue in cost tests.
This means, if we change the cost analysis in a slight way that results in some constant cost increase under 200, we wouldn't able to detect it. I find this unsatisfactory and somewhat hacky.
This diff adds the ability to write the result of `costs-report.json` into a separate `cost-issues.exp` and then compare the actual costs (not only than relying on this arbitrary threshold reporting mechanism).
Reviewed By: skcho
Differential Revision: D21816312
fbshipit-source-id: 93b531928
Summary:
IR/ should contain modules pertaining to the core IR of infer, i.e. how
CFGs are represented (including SIL).
These categories of modules were moved:
- Access paths and HIL are an abstraction on top of SIL used by certain
analyses. Moving the corresponding modules to IR/ makes this clearer
as they are not really part of the IR (they are less fundamental than
SIL).
- Error reporting is also something for other analyses, not part of IR.
Moved a bunch of modules related to that to absint/.
- Same for ProcnameDispatcher
- biabduction-speficic modules: Objc_models, BiabductionModels
- test-determinator-specific modules: JProcname
Reviewed By: ezgicicek
Differential Revision: D21722368
fbshipit-source-id: b28e9bdac
Summary:
It was unused except one place in JsonReports where we disabled
filtering for the Linters category. But, it seems the behaviour is the
same without that since the only filtering this does is for bucketting
for certain bug types, which doesn't include any linters bug types.
Reviewed By: ngorogiannis
Differential Revision: D21683723
fbshipit-source-id: d0555531b
Summary:
Problem: issue types can be reported by several checkers. The current
solution is to change the name of the issue, eg `BIABD_USE_AFTER_FREE`.
This doesn't look great for the user.
We already store a "human readable" name for each issue. These need not
be unique. Use this instead in textual output. In order to keep the link
between the text output and the true "issue type", eg to pass to
`--disable-issue-type`, also print the `unique_id` part of the issue in
the summary:
```
examples/hello.c:12: error: Null Dereference
pointer `s` last assigned on line 11 could be null and is dereferenced at line 12, column 3.
10. void test() {
11. int* s = NULL;
12. *s = 42;
^
13. }
Found 1 issue
Issue Type(ISSUED_TYPE_ID): #
Null Dereference(NULL_DEREFERENCE): 1
```
We could also print the issue id in each report but that looks worse.
Other tools use numbers for issue ids, but these are not descriptive at
all, eg `--disable-issue-type 86` is not very telling.
Reviewed By: skcho
Differential Revision: D21663957
fbshipit-source-id: 506b0fda9
Summary: Argument `filter_kind` is only ever set to `Auto` by the clang integration.
Reviewed By: jvillard
Differential Revision: D21685943
fbshipit-source-id: ebeb04409
Summary:
`Buck.parse_command_and_targets` is never called with a `filter_kind:No` argument.
Open variants are not great for detecting dead code.
Reviewed By: jvillard
Differential Revision: D21685076
fbshipit-source-id: 68a89ef65
Summary:
A buck integration for capturing simultaneously clang and java targets.
Just like the java-specific `JavaGenruleCapture` integration, it relies on
dummy targets that depend on the flavoured clang versions.
For example, a `cxx_library` target named `//clang:hello` will have an associated target
called `//clang:hello_infer` that depends on `//clang:hello#infer-capture-all`,
and whose output is a text file containing the output path of the dependency.
Reviewed By: jvillard
Differential Revision: D21620458
fbshipit-source-id: 23919387b
Summary: Filenames can contain spaces, so we need to split on the first ' '
Reviewed By: jvillard
Differential Revision: D21618408
fbshipit-source-id: b1e472d18
Summary:
We stopped relying on an external perf data file to determine which functions are on the cold start. Let's remove this issue now.
NB: Keeping the `--perf-profiler-data-file` as deprecated to prevent issues on the CI and prod.
Reviewed By: skcho
Differential Revision: D21594150
fbshipit-source-id: faa58782d
Daiva Naudziuniene
Jules Villard
Nikos Gorogiannis
Mitya Lyubarskiy
Sungkeun Cho
Ezgi Çiçek
Qianyi Shu
Dulma Churchill
Martin Trojer
Josh Berdine