[llvm-bugs] [Bug 34193] New: False negative in following pointer for core.NullDereference

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=34193

            Bug ID: 34193
           Summary: False negative in following pointer for
                    core.NullDereference
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Static Analyzer
          Assignee: kremenek at apple.com
          Reporter: whisperity at gmail.com
                CC: llvm-bugs at lists.llvm.org

Consider the following code:

int* a()    { return nullptr; }
int  main()
{
  int* ptr =  a();
  int    x = *ptr;
  return x;
}

While this is clearly a null dereference, ClangSA does not seem to properly
follow this pointer in the analyzer, or some inner heuristics swallow this
case.

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