default initializers

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2 total messages Started by Mike Lijewski Fri, 15 Sep 1989 16:40

#425

Author: Mike Lijewski
Date: Fri, 15 Sep 1989 16:40

46 lines
1835 bytes

The docuentation on default initializers seems somewhat fuzzy
on this issue, though I would expect the following to work.
Unfortunately, it seems that only one declaration of ff() is
remembered after it's initial definition.

Script started on Fri Sep 15 12:30:08 1989

robbie(1)->cat a.cc

#include <stream.h>

void ff(int i, int j, int k)
{
  cout << i << " " << j << " " << k << "\n";
}

void ff(int, int, int = 7);
void ff(int , int = 6, int);
void ff(int = 5, int, int);

main()
{
  ff();

  return 0;
}

robbie(2)->g++ -v a.cc

g++ version 1.36.0-
 /usr/local/lib/gcc-cpp -+ -v -I/usr/local/include/g++-include -undef -D__GNU__ -D__GNUG__ -D__GNUC__ -D__cplusplus -Dunix -Di386 -Dsun386 -Dsun -D__unix__ -D__i386__ -D__sun386__ -D__sun__ a.cc /tmp/cca02344.cpp
GNU CPP version 1.35.96
 /usr/local/lib/gcc-cc1plus /tmp/cca02344.cpp -quiet -dumpbase a.cc -noreg -version -o /tmp/cca02344.s
GNU C++ version 1.36.0- (80386, Sun syntax) compiled by GNU C version 1.35.96.
default target switches: -m80387
a.cc:9: all trailing parameters must have default arguments
a.cc:10: all trailing parameters must have default arguments

robbie(3)->exit

script done on Fri Sep 15 12:31:01 1989
-- 
Mike Lijewski  (H)607/277-7623 (W)607/255-0539 (desk)607/255-2960
Cornell National Supercomputer Facility
ARPA: mjlx@cornellf.tn.cornell.edu  BITNET: mjlx@cornellf.bitnet
SMAIL:  1122 Ellis Hollow Rd. Ithaca, NY  14850

default initializers

#437

Author: Michael Tiemann
Date: Tue, 19 Sep 1989 17:13

57 lines
1726 bytes

   Date: 15 Sep 89 16:40:43 GMT
   From: lijewski@tcgould.tn.cornell.edu  (Mike Lijewski)
   Organization: Cornell National Supercomputer Facility
   Sender: bug-g++-request@prep.ai.mit.edu

   The docuentation on default initializers seems somewhat fuzzy
   on this issue, though I would expect the following to work.
   Unfortunately, it seems that only one declaration of ff() is
   remembered after it's initial definition.
Wrong diagnosis; see below.

   Script started on Fri Sep 15 12:30:08 1989

   robbie(1)->cat a.cc

   #include <stream.h>

   void ff(int i, int j, int k)
   {
     cout << i << " " << j << " " << k << "\n";
   }

   void ff(int, int, int = 7);
   void ff(int , int = 6, int);
   void ff(int = 5, int, int);

   main()
   {
     ff();

     return 0;
   }

This works:

   void ff(int, int, int = 7);
   void ff(int , int = 6, int = 7);
   void ff(int = 5, int = 6, int = 7);

As does this:

   void ff(int = 5, int = 6, int = 7);
   void ff(int, int = 6, int = 7);
   void ff(int, int, int = 7);

In both cases, what is remembered is

   void ff(int = 5, int = 6, int = 7);

It is terribly confusing to see

   void ff(int , int = 6, int);

so I did not have the compiler recognize it.

Michael

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