[Bug c++/17062] New: c++ syntax bug. Object declaration treated as a function pointer declaration.

["gcc-bugzilla at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

c++ syntax analyser wrongly parses "A a(B(x));" which is an object declaration with three constructor calls ( B::B(int); B(const B&); A(B); ).
This construct is treated as a function pointer declaration "A a(B x);"

Environment:
System: Linux cactus 2.6.4 #1 Tue Apr 6 11:23:53 MSD 2004 i686 GNU/Linux
Architecture: i686

	
host: i486-pc-linux-gnu
build: i486-pc-linux-gnu
target: i486-pc-linux-gnu
configured with: ../src/configure -v --enable-languages=c,c++,java,f77,pascal,objc,ada,treelang --prefix=/usr --libexecdir=/usr/lib --with-gxx-include-dir=/usr/include/c++/3.4 --enable-shared --with-system-zlib --enable-nls --without-included-gettext --program-suffix=-3.4 --enable-__cxa_atexit --enable-libstdcxx-allocator=mt --enable-clocale=gnu --enable-libstdcxx-debug --enable-java-gc=boehm --disable-werror i486-linux

How-To-Repeat:
$ cat > bug.cpp
struct B
{
  B(int x){}
};

struct A
{
  A(B x){}
  void m(void){}
};

void f(void)
{
  int x = 0;
  A a(B(x));
  a.m();
}
^D
$ g++ -c bug.cpp	    
bug.cpp: In function `void f()':
bug.cpp:16: error: request for member `m' in `a', which is of non-class type `A ()(B)'
------- Additional Comments From andrei dot mischenko at mail dot ru  2004-08-17 10:33 -------
Fix:
replace 
A a(B(x));
with either
A a((B)x);
or
A a = A(B(x));

-- 
           Summary: c++ syntax bug. Object declaration treated as a function
                    pointer declaration.
           Product: gcc
           Version: 3.4.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: andrei dot mischenko at mail dot ru
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i486-pc-linux-gnu
  GCC host triplet: i486-pc-linux-gnu
GCC target triplet: i486-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17062