Summary:
Each Erlang function now has a Procdesc in `results.db`. The
ProcAttributes record if a function is exported or not by using the
access Public or Private, respectively.
This adds also `ErlangTypeName`. We use a fixed set of "type names" for
the different types of values in Erlang (i.e., for Erlang's "dynamic types").
Reviewed By: jvillard
Differential Revision: D28385954
fbshipit-source-id: f8278505a
Summary:
## Issue:
On `master`, it seems that there is a missing newline when Infer prints the `tenv` for a structure type:
```bash
avj@platypus /tmp/infer_bug$ cat test.c
typedef struct {
int a;
} st1;
typedef struct {
int b;
} st2;
avj@platypus /tmp/infer_bug$ infer --version
Infer version v1.0.0-55871dd28
Copyright 2009 - present Facebook. All Rights Reserved.
avj@platypus /tmp/infer_bug$ rm -rf infer-out && infer --debug run -P -- gcc -c test.c
Logs in /tmp/infer_bug/infer-out/logs
Capturing in make/cc mode...
Found 1 source file to analyze in /tmp/infer_bug/infer-out
No issues found
avj@platypus /tmp/infer_bug$ grep -A1 "dummy" infer-out/captured/*/*.tenv.debug
dummy: falsestruct st1
fields: {
--
dummy: falsestruct st2
fields: {
--
dummy: falsestruct objc_class
fields: {}
```
(notice that `dummy: false` and `struct objc_class` are on the same line, with no spacing)
## Resolution
Their PR adds an explicit newline at the end of pretty-printing a structured value, such that it is formatted correctly in the `tenv`:
```bash
avj@platypus /tmp/infer_bug$ infer --version
Infer version v1.1.0-bb5a33506
Copyright 2009 - present Facebook. All Rights Reserved.
avj@platypus /tmp/infer_bug$ rm -rf infer-out && infer --debug run -P -- gcc -c test.c
Logs in /tmp/infer_bug/infer-out/logs
Capturing in make/cc mode...
Found 1 source file to analyze in /tmp/infer_bug/infer-out
No issues found
avj@platypus /tmp/infer_bug$ grep -A1 "dummy" infer-out/captured/*/*.tenv.debug
dummy: false
struct st1
--
dummy: false
struct st2
--
dummy: false
struct objc_class
--
dummy: false
```
(*edit*: I forgot to build after committing; now with updated hash)
Signed-off-by: Andrew V. Jones <andrewvaughanj@gmail.com>
Pull Request resolved: https://github.com/facebook/infer/pull/1416
Reviewed By: skcho
Differential Revision: D27264518
Pulled By: jvillard
fbshipit-source-id: 3b86b4c22
Summary:
Dear Infer team,
To contribute to Infer community, I would like to integrate infer#'s language agnostic layer into Infer.
Please help to review, discuss and consider to merge this feature.
Thanks,
Xiaoyu
Pull Request resolved: https://github.com/facebook/infer/pull/1361
Reviewed By: skcho
Differential Revision: D25928458
Pulled By: jvillard
fbshipit-source-id: 7726150b8
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
Summary: This will be needed in the next diff so that we can find all classes that conform to `NSCopying` protocol.
Reviewed By: skcho
Differential Revision: D24216549
fbshipit-source-id: 297b527a6
Summary:
This diff removes a dead field `Struct.subs`, which was used in
heuristics finding methods from sub-classes.
Reviewed By: ezgicicek
Differential Revision: D22945346
fbshipit-source-id: 4b3bf0093
Summary:
Changing the order of the superclasses of a struct exposes a bug in both biabduction and the devirtualiser where a method would be resolved into a still virtual method (an interface method).
The reason is that we don't check whether a super class is an interface before exploring it, and seemingly we assume that there is only one (first) superclass worth exploring. This also ignores multiple inheritance in C++.
To fix this, refactor the resolution to a complete search (not just the first super class!) which ignores Java interface methods. Also moved it to `Tenv` so that both biabduction and the devirtualiser can use it.
Reviewed By: jvillard
Differential Revision: D22357488
fbshipit-source-id: 54b96c1f4
Summary:
Merging global type environments for Java needs some form of non-trivial type definition merging because:
- The frontend is likely non-deterministic, so it can capture the same type differently.
- There are classes that appear with two distinct definitions (usually ordered by inclusion) when one is produced by an ABI-like compilation process (so only public fields/methods would appear for example), and one full version.
- The frontend produces dummy versions (empty definitions), and full ones.
- The location information is variously missing/present.
This diff tries to strike a balance between a full semantic merge (which depends on the frontend/buck integration) and the current code which "merges" by clobbering old definitions with new ones.
One side-effect of this diff is that code cannot expect a special order for supers.
Reviewed By: jvillard
Differential Revision: D22630286
fbshipit-source-id: fc66c7000
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:
Java bytecode format does not record the declarations location
for classes and fields. We set up a first infrastructure to recover this
information. Currently we only track location for classes and only gives
the first line of the corresponding source file. We will enhance this location
with source file (baby) parsing in a next diff.
Reviewed By: mityal
Differential Revision: D20868187
fbshipit-source-id: d355475e9
Summary:
To find a method in non-abstract sub-classes, this diff applies the
same heuristics of inferbo.
* If the class is an interface: Find its unique sub-class and apply the heuristics recursively.
* If the class is an abstract class: Find/use its own summary if possible. If not found, find
one (arbitrary but deterministic) summary from its sub-classes.
* Otherwise: Find its own summary.
Reviewed By: ezgicicek
Differential Revision: D20647101
fbshipit-source-id: 2f8f3ff81
Radu Grigore
Andrew V. Jones
Xiaoyu Liu
Nikos Gorogiannis
Ezgi Çiçek
Sungkeun Cho
David Pichardie