[LLVMbugs] [Bug 11550] New: Missing warning for unused variables of a class type with user declare constructor

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=11550

             Bug #: 11550
           Summary: Missing warning for unused variables of a class type
                    with user declare constructor
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: rafael.espindola at gmail.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified


We don't warn about
-------------------
struct S {
  S();
};
S foo();
void bar() {
  S x = foo();
}
-----------------

gcc 4.6 warns about x being "set but not used", which I don't think is
technically correct, but it is better than nothing.

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