🚀 go-pugleaf

In this example, should not the trivial conversion (const T --> const T &)
be applied before the user-defined conversion?

--
arapaho /tmp [61] % cat a.c
#include <stream.h>

class A {
public:
    A(int)      {}
    operator const A & (void) const
    {
        cout << "Converted to (const A &) !\n";
        return *this;
    }
    operator == (const A &a) const
    {
        return 1;
    }
};

main()
{
    const A a = 0, b = 0;

    return a == b;
}
arapaho /tmp [62] % g++ -v a.c
Reading specs from /usr/local/gnu/lib/gcc-lib/sparc-sun-sunos4.1.2/2.3.3/specs
gcc version 2.3.3
 /usr/local/gnu/lib/gcc-lib/sparc-sun-sunos4.1.2/2.3.3/cpp -lang-c++ -v -undef -
D__GNUC__=2 -D__GNUG__=2 -D__cplusplus -Dsparc -Dsun -Dunix -D__sparc__ -D__sun_
_ -D__unix__ -D__sparc -D__sun -D__unix a.c /usr/tmp/cca19255.i
GNU CPP version 2.3.3 (sparc)
 /usr/local/gnu/lib/gcc-lib/sparc-sun-sunos4.1.2/2.3.3/cc1plus /usr/tmp/cca19255
.i -quiet -dumpbase a.cc -version -o /usr/tmp/cca19255.s
GNU C++ version 2.3.3 (sparc) compiled by GNU C version 2.3.3.
 as -o /usr/tmp/cca192551.o /usr/tmp/cca19255.s
 /usr/local/gnu/lib/gcc-lib/sparc-sun-sunos4.1.2/2.3.3/ld -e start -dc -dp /lib/
crt0.o -L/usr/local/gnu/lib/gcc-lib/sparc-sun-sunos4.1.2/2.3.3 -L/usr/local/gnu/
lib /usr/tmp/cca192551.o -lg++ -lgcc -lc -lgcc
arapaho /tmp [63] % a.out
Converted to (const A &) !
Converted to (const A &) !
Converted to (const A &) !
Converted to (const A &) !
Converted to (const A &) !
Converted to (const A &) !
Converted to (const A &) !
Converted to (const A &) !
Converted to (const A &) !
[repeated forever...]