Summary:
Create dummy functions representing the initializers of global variables. This
is so we can implement checks in the backend that can look at the initializer
expressions of global variables. We try not to create these dummy functions
when the initializer is not present, although for some reason we sometimes end
up with empty initializers.
Also add source file info to global variables in the backend (Pvar.re).
Reviewed By: sblackshear
Differential Revision: D3780238
fbshipit-source-id: 2dca87e
Summary:
Rename symbols in test files so they are not duplicated and files can be analyzed together without affecting analysis results.
Fix some compilation errors, where files could be analyzed but would fail direct compilation.
Add Makefile mimicking the same analysis parameters used for the existing tests.
Reviewed By: dulmarod
Differential Revision: D3869993
fbshipit-source-id: 6db1baf
Summary:
The extra dereference in stmtexpr was wrong. When a dereference is needed, we have a cast.
This was causing one dereference too many, and creating wrong results.
Reviewed By: akotulski
Differential Revision: D3393294
fbshipit-source-id: 7a1ec8e
Summary:public
When a conditional is the last instruction, there will be a join node leading directly to the exit node.
Some instructions, such as nullification of dead variables, and abstraction, are added to the control flow graph automatically. But, join nodes cannot contain instructions. So when a procedure ends with a conditional, there might be no place to store these instructions.
This diff adds one extra node between the join and the exit node in that situation.
Reviewed By: jvillard
Differential Revision: D3179056
fb-gh-sync-id: 2b9cd7e
fbshipit-source-id: 2b9cd7e
Summary:public
Instead of using location of init_stmt, use location of variable when translating initialization.
Most of the time it change anything with some exceptions:
// example1 - C/C++/objC
int x = // now: assignment happens in this line
3; // past: assignment happens in this line
// example2: valid in C++11 only
struct X {
int x = 0; // now: one assignment here
int y = 2; // now: one assigmnent here
X() = default; // before: 2 assignments in this line
};
Reviewed By: dulmarod
Differential Revision: D3155870
fb-gh-sync-id: f38c78c
fbshipit-source-id: f38c78c
Summary:public
Improved/simplified framework for fronend checkers.
Now we have a unique hook from cTrans to run checkers on statements and a unique
hook from cFrontent to run checkers on declarations.
So now when adding a checker we don't have to modify cTrans/cFrontend.
Moreover made more sistematic the way checkers are invoked. This simplify the definition
of checkers and the way we use them.
Code is now simpler.
Reviewed By: jvillard
Differential Revision: D2976589
fb-gh-sync-id: fbe22d4
shipit-source-id: fbe22d4
Summary:
public
Lines other than the first of multi-line comments in non-ocaml files
were flush right instead of aligned.
Reviewed By: jvillard
Differential Revision: D2739752
fb-gh-sync-id: c85f56e
Summary:
public This continues the work on adding builtins for getters and setters
and removing the generated code from the frontend. This is extending it to setters and
removing the preanalysis that is no longer needed.
Reviewed By: akotulski
Differential Revision: D2734499
fb-gh-sync-id: 7cf5749
Summary:
public
Update fcp, changes:
1. decl_ref from ObjcPropertyDecl to IvarDecl
2. Export location information in macro expansion, not macro definition
Reviewed By: dulmarod, jvillard
Differential Revision: D2733967
fb-gh-sync-id: 7d8ce00
Summary: public
We were generating getters and setters in the frontend, and then removing them if they were not needed
in the preanalysis. This diff adds a builtin getter that gets called if we are going to skip the function. That
means, if there was a getter written by the developers we still use that one rather than the builtin.
Code for setter and cleanup of preanalysis will come in a next diff.
Reviewed By: jvillard
Differential Revision: D2702890
fb-gh-sync-id: d65f25e
Summary: public Make it uniform with other function call translations. This is just reordering, no functional change intended
Reviewed By: dulmarod
Differential Revision: D2696370
fb-gh-sync-id: 63656e3
Summary: public
Nodes in these functions can be created later (after translation of subexpressions is done).
Change triggers many differences in .dot files, but they are all about different numbering of
nodes.
There is no functional change in this diff.
Reviewed By: dulmarod
Differential Revision: D2699703
fb-gh-sync-id: a7b8d2a
Summary: public
Using clang's method resolution. This means that, in method calls, clang gives you a pointer to the declaration of the method.
In some cases though, clang doesn't find the right method. For example, when it finds a method in a category, we
need to make it into a method in the corresponding class, because that's how we treat categories in Infer. Moreover,
when it finds a method in a protocol, that is not useful for us, since the implementation will be in some class. Finally,
sometimes the call is on an object of type id, in which case clang doesn't know what is the correct declaration. In
those cases, we fall back to what we were doing before of approximating the method resolution. We also refactor
some of the code.
Reviewed By: akotulski
Differential Revision: D2679766
fb-gh-sync-id: b79bb85
Summary: public
The static and global variables used in blocks don't appear in the ast as captured.
We need them however to try and find retain cycles involving those variables.
This diff adds a way of collecting the static variables used in blocks and treat them
like we treat other captured variables to find retain cycles.
Reviewed By: ddino
Differential Revision: D2663727
fb-gh-sync-id: d5b44ec
Summary: @public
This removes the old way of finding variable declarations to create sil variables and replaces it with
a a new way based on the map from pointers to declarations.
Basically, every variable dereference contains a pointer to the variable declaration, with that we can
build the corresponding sil variable.
Reviewed By: @akotulski
Differential Revision: D2536000
fb-gh-sync-id: dd29cf9
Summary:
This is the second of 3 stack diffs to deal with replacing the parser of types.
This diff is about changes to translate record types, as well as class types and enum
types. For class types and enum types we store the declaration pointer in the map of
types to find the type easier later.
For record declarations, we change the way we build record names.
Moreover, we don't translate typedefs anymore, because when we have a pointer to a typedef,
we can find the actual type it points to.
Summary:
each procedure has a different scope, so we can restart the fresh name generator and have more stable instructions in the cfg, that don't change when other procedures are changed
Summary:
@public
Sorting the fields in structs and classes. Was needed in the backend and forgotten.
Fixes the github issue https://github.com/facebook/infer/issues/90.
Test Plan: Added a new test that shows that we now get a spec for the example from the github issue.
Summary:
@public
The clang location information is described in an incremental way: each location information is a delta with respect to the previous one in the AST. This is based on a the visit of the AST nodes which corresponds to the order in which the lines are printed with the standard clang AST dump:
clang -cc1 -ast-dump filename.c
This diff adds a preprocessing phase to the front-end so that location information is composed during a visit, and explicit location information is used instead.
In the case of include files, we report the last known location before including the file.
The current file for a function is the file where it is defined. So if a function is entirely defined in a .h file, then the location information will consistently be about the .h file. If instead a function is defined in the source file being analyzed, and some AST nodes come from macro expansion, line information will refer to the original file.
The front-end tests reveal that the location information was incorrect in a few dot files.
Test Plan: arc unit, after having fixed the wrong location in the existing .dot files
Jules Villard
Cristiano Calcagno
Sam Blackshear
Dulma Churchill
Andrzej Kotulski
Dino Distefano
Josh Berdine
Open Source Synchronization