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function partial spec bug
- From: nbecker at hns dot com (Neal D. Becker)
- To: gcc-bugs at gcc dot gnu dot org
- Date: 18 Nov 2002 12:54:00 -0500
- Subject: function partial spec bug
Expected result: no error. Partial specialization should be used.
gcc -v -c bug.cc
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --host=i386-redhat-linux --with-system-zlib --enable-__cxa_atexit
Thread model: posix
gcc version 3.2 20020903 (Red Hat Linux 8.0 3.2-7)
/usr/lib/gcc-lib/i386-redhat-linux/3.2/cc1plus -v -D__GNUC__=3 -D__GNUC_MINOR__=2 -D__GNUC_PATCHLEVEL__=0 -D__GXX_ABI_VERSION=102 -D__ELF__ -Dunix -D__gnu_linux__ -Dlinux -D__ELF__ -D__unix__ -D__gnu_linux__ -D__linux__ -D__unix -D__linux -Asystem=posix -D__NO_INLINE__ -D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ -D__tune_i386__ bug.cc -D__GNUG__=3 -D__DEPRECATED -D__EXCEPTIONS -quiet -dumpbase bug.cc -version -o /tmp/ccoHFBhc.s
GNU CPP version 3.2 20020903 (Red Hat Linux 8.0 3.2-7) (cpplib) (i386 Linux/ELF)
GNU C++ version 3.2 20020903 (Red Hat Linux 8.0 3.2-7) (i386-redhat-linux)
compiled by GNU C version 3.2 20020903 (Red Hat Linux 8.0 3.2-7).
ignoring nonexistent directory "/usr/i386-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/include/c++/3.2
/usr/include/c++/3.2/i386-redhat-linux
/usr/include/c++/3.2/backward
/usr/local/include
/usr/lib/gcc-lib/i386-redhat-linux/3.2/include
/usr/include
End of search list.
bug.cc: In function `int main()':
bug.cc:19: call of overloaded `Rnd(ComplexI)' is ambiguous
bug.cc:4: candidates are: T Rnd(T) [with int shift = 1, int size = 1, T =
std::complex<int>]
bug.cc:10: std::complex<FLT> Rnd(std::complex<FLT>) [with int
shift = 1, int size = 1, FLT = int]
bug.cc:
#include <complex>
template<int shift, int size, typename T>
inline T Rnd (T x) {
T y = x >> (shift - 1);
return (y + 1) >> 1;
}
template<int shift, int size, typename FLT>
inline std::complex<FLT> Rnd (std::complex<FLT> x) {
return std::complex<FLT> (Rnd<size, shift> (real (x)), Rnd<size, shift> (imag (x)));
}
typedef std::complex<int> ComplexI;
int main () {
int x = Rnd<1, 1> (10);
ComplexI y = Rnd<1, 1> (ComplexI (1, 1));
}