[LLVMbugs] [Bug 15156] New: Unjustified vexing-parse

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15156

            Bug ID: 15156
           Summary: Unjustified vexing-parse
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Static Analyzer
          Assignee: kremenek at apple.com
          Reporter: peter_ll at pgrz.de
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

clang version 3.3 (trunk 173433)
Target: x86_64-unknown-linux-gnu
Thread model: posix

Hi

Compiling the following code results in a warning.

struct C
{
    C(int) {};
};

struct D
{
    D(C) {}
};

void a(int b)
{
  D d( C(b) );
}


a.cpp:13:6: warning: parentheses were disambiguated as a function declaration
[-Wvexing-parse]
  D d( C(b) );
     ^~~~~~~~
a.cpp:13:8: note: add a pair of parentheses to declare a variable
  D d( C(b) );
       ^
       (   )
1 warning generated.


In my opinion there is no parse ambiguity because "b" names a concrete object.
I await the verdict of the language lawyers. ;)

Take care
Peter

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