[llvm-bugs] [Bug 40114] New: CSA issues false positive warning if `if()` is used.

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40114

            Bug ID: 40114
           Summary: CSA issues false positive warning if `if()` is used.
           Product: clang
           Version: 7.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Static Analyzer
          Assignee: dcoughlin at apple.com
          Reporter: steveire at gmail.com
                CC: dcoughlin at apple.com, llvm-bugs at lists.llvm.org

// Not decorated analyzer_noreturn
void someMethod()
{

}

struct A
{
  int someApi();
};

int testAssert(A* a) {
    return a->someApi();
}

int testAssert3(A* a) {
    if (a)
        ; // do nothing

    return a->someApi();
}

int testAssert5(A* a) {
    if (a)
        someMethod();
    return a->someApi();
}


Neither of the following should be issued:

$ clang --analyze ../tmp/assert.cpp
../tmp/assert.cpp:20:12: warning: Called C++ object pointer is null
    return a->someApi();
           ^~~~~~~~~~~~
../tmp/assert.cpp:26:12: warning: Called C++ object pointer is null
    return a->someApi();
           ^~~~~~~~~~~~
2 warnings generated.

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20181220/b6b1d241/attachment.html>