Summary:
1. Add capability to clang frontend to replace some function calls with another SIL code based on `__deprecated__` attribute.
2. Given this capability, use those attributes for shared_ptr getters to generate `Sil.Load` instruction instead of method call
3. Add test that mimics shared_ptr model, but it doesn't have that much scary C++ templated code
Reviewed By: jvillard, jberdine
Differential Revision: D3729176
fbshipit-source-id: 2a330d5
Summary:
Make std::shared_ptr<T> translated as T* inside infer. This will make reporting better
since smart pointers are really pointers not structs - this form is much easier for the analyzer to understand.
This requires changes to the model of shared_ptr as well.
Reviewed By: jvillard
Differential Revision: D3587255
fbshipit-source-id: b86fb36
Summary:
So far infer had very fragile mechanism to detect smart pointers. It was looking for "std" and "(shared|unique)_ptr" inside name string.
This is easy to trick (like mystd::shared_ptr) and not something we want.
Instead, inside models create models inside infer_std_model namespace. Then just "export" that model into std namespace
via `using shared_ptr = infer_std_model<T>;`
Reviewed By: jvillard
Differential Revision: D3703827
fbshipit-source-id: 9640fc2
Summary:
Assume that std::vector::resize will always create nonempty vector. While this is clearly
wrong for resize(0), it removes many FPs for `resize(n)` calls, where value of `n` is unknown.
Without it, infer was thinking that `n` could be 0 and reported empty vector access.
Reviewed By: jvillard
Differential Revision: D3424355
fbshipit-source-id: cb476de
Summary:
Reuse data fields of model's superclass (which is actual implementation).
Not very pretty, but makes sizeof shared_ptr same as in actual libraries
Reviewed By: jvillard
Differential Revision: D3398628
fbshipit-source-id: bdb9418
Summary:
Turns out, analyzer was getting confused with complicated
model and it was reporting empty access in places it
shouldn't. Fixing backend is not trivial (tracing mode is the answer),
but the model can be simplified.
It introduces the problem that get() method doesn't return fresh value
every time, but we should be able to change backend later to deal with it.
Reviewed By: sblackshear
Differential Revision: D3328228
fbshipit-source-id: dddbaf8
Summary:
Create model of C++ std::vector to find occurrences when vector which might be empty is accessed. Do it by triggering null dereference every time empty vector access is performed.
Note: model will be used only when c++11 (or c++14) are used.
Reviewed By: sblackshear
Differential Revision: D3276203
fbshipit-source-id: 420a95a
Summary: Create "empty" vector model header. The actual model implementation will come in next diffs to simplify review process.
Reviewed By: dulmarod
Differential Revision: D3240683
fb-gh-sync-id: 03ee002
fbshipit-source-id: 03ee002
Summary:stdlibc++ headers didn't like the fact that hash<unique_ptr> didn't have defined operator() directly.
Do that and provide empty body. Keep inheritance in case it helps compilation to succeed.
Reviewed By: dulmarod
Differential Revision: D3207721
fb-gh-sync-id: 8c950da
fbshipit-source-id: 8c950da
Summary:public
clang-format changed filename inside __has_include(<FILENAME>), turn off
clang format for that part of the code.
Reviewed By: jberdine
Differential Revision: D3133593
fb-gh-sync-id: c601514
fbshipit-source-id: c601514
Summary:public
In order to make infer more resiliant to compilation failure,
make static_assert to do nothing.
As a bonus, set _FORTIFY_SOURCE inside same file instead of command line
Reviewed By: jvillard
Differential Revision: D3133446
fb-gh-sync-id: 590f4ad
fbshipit-source-id: 590f4ad
Summary:public
1. Make detection of libc++/stdlibc++ headers more robust
2. Turn on c++11 only for newer versions of stdlibc++
Reviewed By: jvillard
Differential Revision: D3121187
fb-gh-sync-id: c2e5be5
fbshipit-source-id: c2e5be5
Summary:public
Conversion constructor of unique_ptr should be explicit. Fix it.
Reviewed By: cristianoc
Differential Revision: D3075661
fb-gh-sync-id: e911d8c
shipit-source-id: e911d8c
Summary:public
Create a model of std::unique_ptr in similar fashion to what was done to std::shared_ptr.
For now, we are modeling it as container of raw pointer (no ownership concept).
This time unique_ptr is not derived from std__unique_ptr (unlike shared_ptr, it was easier to not do that) and so we need to provide implementations for all non-member functions per C++ reference:
http://en.cppreference.com/w/cpp/memory/unique_ptr
Reviewed By: dulmarod
Differential Revision: D3048209
fb-gh-sync-id: a9a6455
shipit-source-id: a9a6455
Summary:public
Create initial model of C++ std::shared_ptr. This means that infer will replace implementation of
shared_ptr and the resulting binary will change. Make sure no one will run it by crashing any binary that includes that code.
Reviewed By: jvillard
Differential Revision: D2999948
fb-gh-sync-id: 5753559
shipit-source-id: 5753559
Andrzej Kotulski