🚀 go-pugleaf

I compiled the program below with g++ 1.35.1- on a Sun 3/60 (SunOS 3.5) and on
a SparcStation 1 (SunOS 4.0.3), but I get different warnings!
I probably made a mistake when installing g++.
Could please somebody try to compile this code on her/his Sun-4 ?

Thank you
Igor Metz

/================================
static const short MAX_ADR_LEN    = 10;

class Address {
private:
  char  adr[MAX_ADR_LEN];
  short len;  // current length of address
  
public:
  Address() { len = -1; }
  // ....
};

int foo (const Address& adr)
{
  Address work = adr;
  return 0;
}

int
main()
{
  Address adr;
  return foo(adr);
}
/===================================

SUN 3/60:

g++ -v -Wall gaga.cc
g++ version 1.35.1-
 /usr/local/lib/gcc-cpp -+ -v -undef -D__GNU__ -D__GNUG__ -D__cplusplus 
-Dmc68000 -Dsun -Dunix -D__mc68000__ -D__sun__ -D__unix__ -Wall 
-D__HAVE_68881__ -Dmc68020 gaga.cc /tmp/cca07116.cpp
GNU CPP version 1.35
 /usr/local/lib/gcc-cc1plus /tmp/cca07116.cpp -quiet -dumpbase gaga.cc -Wall 
-noreg -version -o /tmp/cca07116.s
GNU C++ version 1.35.1- (68k, MIT syntax) compiled by GNU C version 1.35.
In function int foo (const struct Address &):
gaga.cc:15: warning: bitwise copy in initialization of type `Address'
gaga.cc:14: warning: statement with no effect
gaga.cc:15: warning: unused variable `work'
 as -mc68020 /tmp/cca07116.s -o gaga.o
 /usr/local/lib/gcc-ld++ -C /usr/local/lib/crt0+.o /lib/Mcrt1.o gaga.o -lg++ 
/usr/local/lib/gcc-gnulib -lc

SPARCSTATION 1:
g++ -v -Wall gaga.cc
g++ version 1.35.1-
 /usr/local/lib/gcc-cpp -+ -v -undef -D__GNU__ -D__GNUG__ -D__cplusplus -Dsparc
-Dsun -Dunix -D__sparc__ -D__sun__ -D__unix__ -Wall gaga.cc /tmp/cca02403.cpp
GNU CPP version 1.35
 /usr/local/lib/gcc-cc1plus /tmp/cca02403.cpp -quiet -dumpbase gaga.cc -Wall 
-noreg -version -o /tmp/cca02403.s
GNU C++ version 1.35.1- (sparc) compiled by GNU C version 1.35.
In function int foo (const struct Address &):
gaga.cc:15: warning: unused variable `work'
 as /tmp/cca02403.s -o gaga.o
 /usr/local/lib/gcc-ld++ -C /usr/local/lib/crt0+.o gaga.o -lg++ /usr/local/lib/gcc-gnulib -lc