| Age | Commit message (Collapse) | Author |
|---|
|
limit the call stack depth. The analyzer can now accurately simulate factorial for limited depths.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148036 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
We already have a more conservative check in the compiler (if the
format string is not a literal, we warn). Still adding it here for
completeness and since this check is stronger - only triggered if the
format string is tainted.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147714 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
entries map from
(Stmt*,LocationContext*) pairs to SVals instead of Stmt* to SVals.
This is needed to support basic IPA via inlining. Without this, we cannot tell
if a Stmt* binding is part of the current analysis scope (StackFrameContext) or
part of a parent context.
This change introduces an uglification of the use of getSVal(), and thus takes
two steps forward and one step back. There are also potential performance implications
of enlarging the Environment. Both can be addressed going forward by refactoring the
APIs and optimizing the internal representation of Environment. This patch
mainly introduces the functionality upon when we want to build upon (and clean up).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147688 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
as a result of a call.
Problem:
Global variables, which come in from system libraries should not be
invalidated by all calls. Also, non-system globals should not be
invalidated by system calls.
Solution:
The following solution to invalidation of globals seems flexible enough
for taint (does not invalidate stdin) and should not lead to too
many false positives. We split globals into 3 classes:
* immutable - values are preserved by calls (unless the specific
global is passed in as a parameter):
A : Most system globals and const scalars
* invalidated by functions defined in system headers:
B: errno
* invalidated by all other functions (note, these functions may in
turn contain system calls):
B: errno
C: all other globals (which are not in A nor B)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147569 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
http://llvm.org/docs/CodingStandards.html#ll_virtual_anch
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146959 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146792 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146748 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146535 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
Also, allow adding taint to a region (not only a symbolic value).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146532 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
Fix a bug in SimpleSValBuilder, where we should swap lhs and rhs when calling generateUnknownVal(), - the function which creates symbolic expressions when data is tainted. The issue is not visible when we only create the expressions for taint since all expressions are commutative from taint perspective.
Refactor SymExpr::symbol_iterator::expand() to use a switch instead of a chain of ifs.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146336 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
+ random comments
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146199 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146056 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
SVal can be not only a symbol, but a MemRegion. Add support for such
cases.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146006 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145987 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
for finding dependent symbols for taint.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145986 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
- Created a new SymExpr type - SymbolCast.
- SymbolCast is created when we don't know how to simplify a NonLoc to
NonLoc casts.
- A bit of code refactoring: introduced dispatchCast to have better
code reuse, remove a goto.
- Updated the test case to showcase the new taint flow.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145985 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
ExprEngine.
Teach SimpleConstraintManager::assumeSymRel() to propagate constraints
to symbolic expressions.
+ One extra warning (real bug) is now generated due to enhanced
assumeSymRel().
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145832 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
requiring CFG.
Adding more ugly code; the evnvironment printing should be moved to
envirnment at some point.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145828 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144928 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
TaintTag.h will contain definitions of different taint kinds and their properties.
TaintManager will be responsible for implementing taint specific operations, storing taint.
ProgramState will provide API to add/remove taint.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144824 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
since one SRM is created in each ScanReachableSymbols instance. Creating the object just once and calling only scan inside the loop gives ~ 14% speed up of the StaticAnalyzer run (Release+Asserts).
Pull out the declaration of the ScanReachableSymbols so that it can be used directly. Document ProgramState::scanReachableSymbols() methods.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140323 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
And with that, TransferFuncs is gone!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139003 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
debug-printing the contents of a ProgramState.
Unlike the other callbacks, this one is a simple virtual method, since it is only to be used for debugging.
This new callback replaces the old ProgramState::Printer interface, and allows us to move the printing of refcount bindings from CFRefCount to RetainReleaseChecker.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138728 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
explicitly requested for invalidation.
Also, allow CallOrObjCMessage to wrap a CXXConstructExpr as well.
Finally, this allows us to remove the clunky whitelisting system from CFRefCount/RetainReleaseChecker. Slight regression due to CXXNewExprs not yet being handled in post-statement callbacks (PR forthcoming).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138716 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137677 91177308-0d34-0410-b5e6-96231b3b80d8
|
