Compiling the following program:
template <typename VType>
class Vector2 {
private:
VType c_[2];
public:
typedef Vector2<VType> Self;
Vector2(const VType x, const VType y) {
c_[0] = x;
c_[1] = y;
}
friend inline Self Max(const Self &v1, const Self &v2) {
return Self(v1.c_[0], v1.c_[1]);
}
};
template <class T>
Vector2<float> foo(T x) {
Vector2<float> y(0,0);
return Max(y, y);
}
int main() {
foo(3);
return 0;
}
gives the following error:
test.cc: In function 'Vector2<float> foo(T) [with T = int]':
test.cc:25: instantiated from here
test.cc:13: error: no matching function for call to 'Max(Vector2<float>&,
Vector2<float>&)'
When compiled using GCC 4.4.0 trunk. The command line used for the compile is:
g++ -c test.cc
The output of gcc -v is:
Using built-in specs.
Target: i686-unknown-linux-gnu
Configured with: src/configure --disable-nls --enable-threads=posix
--enable-symvers=gnu --enable-__cxa_atexit --enable-c99 --enable-long-long
--with-gnu-as --with-gnu-ld --build=i686-host_pc-linux-gnu
--host=i686-host_pc-linux-gnu
--enable-shared=libgcc,libmudflap,libssp,libstdc++
--enable-languages=c,c++,fortran --with-gmp=/usr/grte/v1
--prefix=/tmp/gcc-4.3.1-glibc-2.3.6-grte/i686-unknown-linux-gnu
--target=i686-unknown-linux-gnu --enable-static-nss --with-arch=pentium3
--with-tune=pentium4
Thread model: posix
gcc version 4.4.0 20090114 (experimental)
COLLECT_GCC_OPTIONS='-v' '-c' '-shared-libgcc' '-mtune=pentium4'
'-march=pentium3'
--
Summary: Cannot find inline friend function in template class
when called from within a template function
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: nvachhar at google dot com
GCC build triplet: i686-unknown-linux-gnu
GCC host triplet: i686-unknown-linux-gnu
GCC target triplet: i686-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38850
