[Bug c++/41965] New: g++ violate [basic.scope.local].

[pi3orama at gmail dot com]

according to standard: 

[basic.scope.local]:

Names declared in the for-init-statement, the for-range-declaration, and in the
condition of if, while, for, and switch statements are local to the if, while,
for, or switch statement (including the controlled statement), and shall not be
redeclared in a subsequent condition of that statement nor in the outermost
block (or, for the if statement, any of the outermost blocks) of the controlled
statement; see 6.4.

and:

[stmt.select]

[ Example:
if (int x = f()) {
int x; // ill-formed, redeclaration of x
}
else {
int x; // ill-formed, redeclaration of x
}
¡ªend example ]

However g++ compiles the example, without generating warning or error. -Wshadow
reports warning.

g++ -v:

Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: /var/tmp/portage/sys-devel/gcc-4.3.4/work/gcc-4.3.4/configure
--prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-bin/4.3.4
--includedir=/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/include
--datadir=/usr/share/gcc-data/i686-pc-linux-gnu/4.3.4
--mandir=/usr/share/gcc-data/i686-pc-linux-gnu/4.3.4/man
--infodir=/usr/share/gcc-data/i686-pc-linux-gnu/4.3.4/info
--with-gxx-include-dir=/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/include/g++-v4
--host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --disable-altivec
--disable-fixed-point --enable-nls --without-included-gettext
--with-system-zlib --disable-checking --disable-werror --enable-secureplt
--disable-multilib --enable-libmudflap --disable-libssp --enable-libgomp
--disable-libgcj --with-arch=i686 --enable-languages=c,c++,treelang,fortran
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --with-bugurl=http://bugs.gentoo.org/
--with-pkgversion='Gentoo 4.3.4 p1.0, pie-10.1.5'
Thread model: posix
gcc version 4.3.4 (Gentoo 4.3.4 p1.0, pie-10.1.5)


-- 
           Summary: g++ violate [basic.scope.local].
           Product: gcc
           Version: 4.3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pi3orama at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41965