[LLVMbugs] [Bug 22633] New: int(::x) interpreted as a declaration but should it be interpreted as an expression?

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=22633

            Bug ID: 22633
           Summary: int(::x) interpreted as a declaration but should it be
                    interpreted as an expression?
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: yaghmour.shafik at gmail.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Given the following code from this stackoverflow question
http://stackoverflow.com/q/24623071/1708801 :

int x;

int main() {
    int(::x); //does not compile
    int(::x + 2); //compiles
}

clang rejects int(::x) since it is interpreting it as a declaration which is
obviously ill-formed. gcc on the other hand interprets it as an expression
statement and compiles the code. As far as I can tell section 6.8 [stmt.ambig]
says int(::x) should be a declaration.

Similar conclusion to bug report 4596:

  http://llvm.org/bugs/show_bug.cgi?id=4594

I filed a gcc bug report:

  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62116

and the response was "Current G++ and EDG both treat it as the valid expression
(int)::x" which implies clang is incorrect.

-- 
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/20150219/37f48d83/attachment.html>