From bug-octave-request at bevo dot che dot wisc dot edu  Fri Jan 23 07:29:32 1998
Subject: Re[2]: octave-2.1.3 building on hpux-10.20, gcc-2.7.2 
From: "PETER HOPFGARTNER"<phopfgartner at memc dot inet dot it>
To: <bug-octave at bevo dot che dot wisc dot edu>
Date: Fri, 23 Jan 98 14:20:58 +0100


     

g++, as almost any other C++ compiler is in a state of flux. ANSI C++ is in the 
final draft state, so there hasn't benn yet any real standard and compilers have
to be adapted. For a hint of what changed you can look at 
http://www.cygnus.com/egcs, where you will find also a machine-readable copy of 
the C++-standard draft.

                                Peter
______________________________ Reply Separator _________________________________
Subject: Re: octave-2.1.3 building on hpux-10.20, gcc-2.7.2 
Author:  <bug-octave at bevo dot che dot wisc dot edu > at NOVARALINK
Date:    1/23/98 7:06 AM


Now changed to gcc 2.8.0 ! Having problems in liboctave :
     
..
     
c++ -c  -I. -I.. -I../liboctave -I../src -I../glob -I../libcruft/misc  -DHAVE_CO
IG_H  -fno-implicit-templates  -g -O2 -Wall cmd-hist.cc
file-stat.h: In method `file_stat::operator void *() const': 
In file included from cmd-hist.cc:57:
file-stat.h:117: static_cast from `int' to `void *'
file-stat.h:117: warning: control reaches end of non-void function `file_stat::o
rator void *() const'
cmd-hist.cc: In method `class string_vector gnu_history::do_list(int, bool)': 
cmd-hist.cc:354: warning: variable `int end' might be clobbered by `longjmp' or 
fork'
cmd-hist.cc:362: warning: variable `int k' might be clobbered by `longjmp' or `v
rk'
cmd-hist.cc:363: warning: variable `int i' might be clobbered by `longjmp' or `v
rk'
Array.h:70: warning: variable `class basic_string<char,string_char_traits<char>,
default_alloc_template<false,0> > * this' might be clobbered by `longjmp' or `vf
k'
make[2]: *** [cmd-hist.o] Error 1
make[2]: Leaving directory `/home/buyuk/octave-2.1.3/liboctave' 
make[1]: *** [liboctave] Error 2
make[1]: Leaving directory `/home/buyuk/octave-2.1.3' 
make: *** [all] Error 2
     
     
This looks like a problem from gcc-2.7.2 - > gcc-2.8 ? 
     
  operator void* () const
    { return ok ()
        ? static_cast<void *> (-1) : static_cast<void *> (0); }
     
if I change the line to :
(void *) (-1) : (void *) (0); }
It compiles the file. But is it correct?? There more static_cast 
problems in other files as well. :-(
     
I thought files compiled ok with gcc-2.7.2 should still compile with 
the new version but it does not seem that way!
     
Osman