to be reworked to model CallEnter/CallExit (just like all other calls). For now, treat constructors mostly
like other function calls, making the analysis of C++ code just a little more useful.
llvm-svn: 129166
The idea is that you can create a VarDecl with an unknown type, or a
FunctionDecl with an unknown return type, and it will still be valid to
access that object as long as you explicitly cast it at every use. I'm
still going back and forth about how I want to test this effectively, but
I wanted to go ahead and provide a skeletal implementation for the LLDB
folks' benefit and because it also improves some diagnostic goodness for
placeholder expressions.
llvm-svn: 129065
1) Change the CFG to include the DeclStmt for conditional variables, instead of using the condition itself as a faux DeclStmt.
2) Update ExprEngine (the static analyzer) to understand (1), so not to regress.
3) Update UninitializedValues.cpp to initialize all tracked variables to Uninitialized at the start of the function/method.
4) Only use the SelfReferenceChecker (SemaDecl.cpp) on global variables, leaving the dataflow analysis to handle other cases.
The combination of (1) and (3) allows the dataflow-based -Wuninitialized to find self-init problems when the initializer
contained control-flow.
llvm-svn: 128858
from how we process ordinary function calls, had a tremendous about of redundancy, and relied
strictly on inlining behavior (which was incomplete) to provide semantics instead of falling
back to the conservative analysis we use for C functions. This is a significant step into
making C++ analyzer support more useful.
llvm-svn: 128557
conventional categories into Basic and AST. Update the self-init checker
to use this logic; CFRefCountChecker is complicated enough that I didn't
want to touch it.
llvm-svn: 126817
- renames evalCastNL and evalCastL to evalCastFromNonLoc and
evalCastFromLoc (avoid abbreviations that aren't well known).
- makes all function parameter names start with a lower case letter
for consistency and distinction from member variables.
- avoids abbreviations in function parameter names.
Reviewed by kremenek@apple.com.
llvm-svn: 126722
A checker can register as receiver/listener of "events" (basically it registers a callback
with a function getting called with an argument of the event type) and other checkers can
register as "dispatchers" and can pass an event object to all the listeners.
This allows cooperation amongst checkers but with very loose coupling.
llvm-svn: 126658
This fixes a crash reported in PR9287, and also fixes a false positive involving the value of such ternary
expressions not properly getting propagated.
llvm-svn: 126362
-Introduce EndOfFunctionNodeBuilder::withCheckerTag to allow it be "specialized" with a
checker tag and not require the checkers to pass a tag.
-For EndOfFunctionNodeBuilder::generateNode, reverse the order of tag/P parameters since
there are actual calls that assume the second parameter is ExplodedNode.
llvm-svn: 126332
-In general, don't have the BugReporter deleting BugTypes, BugTypes will eventually become owned by checkers
and outlive the BugReporter. In the meantime, there will be some leaks since some checkers assume that
the BugTypes they create will be destroyed by the BugReporter.
-Have BugReporter::EmitBasicReport create BugTypes that are reused if the same name & category strings
are passed to EmitBasicReport. These BugTypes are owned and destroyed by the BugReporter.
This allows bugs reported through EmitBasicReport to be coalesced.
-Remove the llvm::FoldingSet<BugReportEquivClass> from BugType and move it into the BugReporter.
For uniquing BugReportEquivClass also use the BugType* so that we can iterate over all of them using only one set.
llvm-svn: 126272
-Migrate ObjCSelfInitChecker to CheckerV2. In the process remove the 'preCallSelfFlags' field
from the checker class and use GRState for storing that info.
-Get ExprEngine to start delegating checker running to CheckerManager.
llvm-svn: 126229
Ted Kremenek