Summary:
This diff fixes two issues in the backend that were causing Bad_footprint
errors when abducing pointsto facts for expressions that start in an array
access and follow up with another structured access, eg `x[0].some_field`:
1. array accesses were assumed to come last in these expressions
2. the type of the root exp passed to the function that walks down the list of
offsets to apply to it was wrong in the case of arrays: it was always the
type of the whole expression instead of the root expr (eg the type of
`x[0].some_field` instead of the type of `x`).
Reviewed By: sblackshear, jeremydubreil
Differential Revision: D3800566
fbshipit-source-id: 0511604
Summary:
This diff converts the Eradicate and Checkers tests to the new direct test format, which does not rely on buck or junit.
A self-contained Makefile is used to compile and analyze the test files, including all the dependencies, and a special option in InferPrint is used to produce a file of expected results `issues.exp`, which is checked into the repository.
Having an explicit Makefile makes it easy to edit and compile one set of test files in isolation, to investigate test failures, do debugging, etc.
A bunch of boilerplate code is removed. For example, the single file of expected results `issues.exp` replaces the 1.5K LOC in `endtoend/java/eradicate`.
Reviewed By: jvillard
Differential Revision: D3764632
fbshipit-source-id: 6c68ab8
Summary:public
An observer object that registered to a notification center needs to be
unregistered before it is deallocated.
If not, the notification center may send a notification to a gost object.
This diff introduce a checker for this problem.
Reviewed By: dulmarod
Differential Revision: D2949692
fb-gh-sync-id: 1653cec
shipit-source-id: 1653cec
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:
The symbolic execution was not stopping in case an unitialized dangling pointer was
passed to a function and then dereferenced inside the callee.
What would happen is that a wrong footprint would be added to the unititialized pointer
at the end of the function call in the caller proposition.
This checks that if we do:
frame * new_footprint
checks that we do not add heap predicates to the frame into uninitialized local variables.
If we can identify the variable then we raise a danglind pointer dereference. If instead
we cannot give a good explanation we give an internal error.
The latter case should be temporary. We should find a general way to raise dangling pointer
deref instead of the internal error.
I also fixed the model of getc that was the way I found the problem.
Jules Villard
Cristiano Calcagno
Ryan Rhee
Martino Luca
Lázaro Clapp Jiménez Labora
Jeremy Dubreil
Dino Distefano
Sam Blackshear
Josh Berdine
Dulma Rodriguez
Open Source Synchronization