If a member template is defined with same template parameter name as the class
name, then this parameter does not hide the class name.
The following code explains the problem:
#include <iostream>
struct B {
static const int x = 1;
};
struct A {
static const int x = 0;
template <typename A>
static void f() {
std::cerr << A::x << std::endl;
}
};
int main() {
A::f<B>();
return 0;
}
The result of the program is 0, while it should be 1.
Compilation:
> g++ -v -save-temps ns_bug.cc
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.2
--program-suffix=-4.2 --enable-clocale=gnu --enable-libstdcxx-debug
--enable-objc-gc --enable-mpfr --disable-libmudflap --enable-targets=all
--enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu
--target=i486-linux-gnu
Thread model: posix
gcc version 4.2.3 (Debian 4.2.3-3)
/usr/lib/gcc/i486-linux-gnu/4.2.3/cc1plus -E -quiet -v -D_GNU_SOURCE ns_bug.cc
-mtune=generic -fpch-preprocess -o ns_bug.ii
ignoring nonexistent directory "/usr/local/include/i486-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/i486-linux-gnu/4.2.3/../../../../i486-linux-gnu/include"
ignoring nonexistent directory "/usr/include/i486-linux-gnu"
#include "..." search starts here:
#include <...> search starts here:
/usr/include/c++/4.2
/usr/include/c++/4.2/i486-linux-gnu
/usr/include/c++/4.2/backward
/usr/local/include
/usr/lib/gcc/i486-linux-gnu/4.2.3/include
/usr/include
End of search list.
/usr/lib/gcc/i486-linux-gnu/4.2.3/cc1plus -fpreprocessed ns_bug.ii -quiet
-dumpbase ns_bug.cc -mtune=generic -auxbase ns_bug -version -o ns_bug.s
GNU C++ version 4.2.3 (Debian 4.2.3-3) (i486-linux-gnu)
compiled by GNU C version 4.2.3 (Debian 4.2.3-3).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: f63294e1c8ecc1bf2473a5bae1642fbe
as -V -Qy -o ns_bug.o ns_bug.s
^[[6~GNU assembler version 2.18.0 (i486-linux-gnu) using BFD version (GNU
Binutils for Debian) 2.18.0.20080103
/usr/lib/gcc/i486-linux-gnu/4.2.3/collect2 --eh-frame-hdr -m elf_i386
--hash-style=both -dynamic-linker /lib/ld-linux.so.2
/usr/lib/gcc/i486-linux-gnu/4.2.3/../../../../lib/crt1.o
/usr/lib/gcc/i486-linux-gnu/4.2.3/../../../../lib/crti.o
/usr/lib/gcc/i486-linux-gnu/4.2.3/crtbegin.o
-L/usr/lib/gcc/i486-linux-gnu/4.2.3 -L/usr/lib/gcc/i486-linux-gnu/4.2.3
-L/usr/lib/gcc/i486-linux-gnu/4.2.3/../../../../lib -L/lib/../lib
-L/usr/lib/../lib -L/usr/lib/gcc/i486-linux-gnu/4.2.3/../../.. ns_bug.o
-lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/lib/gcc/i486-linux-gnu/4.2.3/crtend.o
/usr/lib/gcc/i486-linux-gnu/4.2.3/../../../../lib/crtn.o
--
Summary: template parameter does not hide class name
Product: gcc
Version: 4.2.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: deba at inf dot elte dot hu
GCC build triplet: i486-linux-gnu
GCC host triplet: i486-linux-gnu
GCC target triplet: i486-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36019
