[PATCH] D75677: [Analyzer] Only add iterator note tags to the operations of the affected iterators

[Balogh, Ádám via Phabricator via cfe-commits]

baloghadamsoftware marked 2 inline comments as done.
baloghadamsoftware added inline comments.
Herald added a subscriber: DenisDvlp.


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Comment at: clang/lib/StaticAnalyzer/Checkers/IteratorModeling.cpp:541-542
+        BR.markInteresting(It1);
+        if (const auto &LCV1 = It1.getAs<nonloc::LazyCompoundVal>()) {
+          BR.markInteresting(LCV1->getRegion());
+        }
----------------
NoQ wrote:
> I'm opposed to this code for the same reason that i'm opposed to it in the debug checker. Parent region is an undocumented implementation detail of `RegionStore`. It is supposed to be immaterial to the user. You should not rely on its exact value.
> 
> @baloghadamsoftware Can we eliminate all such code from iterator checkers and instead identify all iterators by regions in which they're stored? Does my improved C++ support help with this anyhow whenever it kicks in?
How to find the region where it is stored? I am open to find better solutions, but it was the only one I could find so far. If we ignore `LazyCompoundVal` then everything falls apart, we can remove all the iterator-related checkers.


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  https://reviews.llvm.org/D75677/new/

https://reviews.llvm.org/D75677