[LLVMbugs] [Bug 8015] New: False use of undefined value warning due to not handling "array[symbolic value]" correctly

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=8015

           Summary: False use of undefined value warning due to not
                    handling "array[symbolic value]" correctly
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Static Analyzer
        AssignedTo: kremenek at apple.com
        ReportedBy: kremenek at apple.com
                CC: llvmbugs at cs.uiuc.edu


We are emitting a false positive for the following snippet:

$ cat t.c
int getNumber();
void foo() {
    int number = getNumber();
    const char *numbers[] = { "zero" };    
    if (number == 0) {
        foo(numbers[number]);
    }
}

$ clang --analyze t.c
t.c:6:9: warning: Pass-by-value argument in function call is undefined
        foo(numbers[number]);
        ^   ~~~~~~~~~~~~~~~
1 warning generated.

-- 
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.