Re: autoconf-2.52g on HP-UX (was: bison 1.32)

[H.Merijn Brand]

On Sat 02 Feb 2002 06:01, Paul Eggert <address@hidden> wrote:
> > >   # The cast to unsigned long works around a bug in the HP C Compiler
> > >   # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
> > >   # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
> > >   # This bug is HP SR number 8606223364.
> > 
> > Do you know if the report is available on SUM, or only to the reporting
> > customer? If public, through what interface?
> 
> Sorry, I don't know.  That SR number was reported by another HP user,
> who said that a compiler guy at HP had filed a bug report.
> 
> > Could you please be more specific.
> 
> That's not necessary, as you answered the question indirectly in your
> later answers.
> 
> > l1:/tmp 115 > cat conftest2.c
> > int main ()
> > {
> >     static unsigned char uc;
> >     static int test_array[1 - 2 * !((sizeof uc) >= 0)];
> >     test_array[0] = 0;
> >     return (0);
> >     } /* main */
> > l1:/tmp 116 > cc -c -Ae +O2 +Onolimit +DAportable -I/pro/local/include 
> > -I/usr/include/X11R6 conftest2.c
> > cc: "conftest2.c", line 4: error 1879: Variable-length arrays cannot have 
> > static storage.
> 
> Yes, it's clear that that cc is buggy.
> 
> Is there some way to work around the problem?  What happens if you
> compile with plain 'cc -c', for example?
> 
> Also, how about the following three programs?  I'm asking because the
> HP bug report indicates that at least the first program should work.
> 
>  static int test_array[1 - 2 * !((int)(sizeof(unsigned char)) >= 0)];
>  int main ()
>  {
>     test_array[0] = 0;
>     return (0);
>  }
> 
>  static int test_array[1 - 2 * !((long)(sizeof(unsigned char)) >= 0)];
>  int main ()
>  {
>     test_array[0] = 0;
>     return (0);
>  }
> 
>  static int test_array[1 - 2 * !((unsigned long)(sizeof(unsigned char)) >= 
> 0)];
>  int main ()
>  {
>     test_array[0] = 0;
>     return (0);
>  }

l1:/tmp 108 > cat > xx.c
 static int test_array[1 - 2 * !((int)(sizeof(unsigned char)) >= 0)];
 int main ()
 {
    test_array[0] = 0;
    return (0);
 }
l1:/tmp 109 > cc +O2 -Ae -o xx xx.c
/usr/ccs/bin/ld: (Warning) At least one PA 2.0 object file (xx.o) was detected.
The linked output may not run on a PA 1.x system.
l1:/tmp 110 > cat > xx.c
 static int test_array[1 - 2 * !((long)(sizeof(unsigned char)) >= 0)];
 int main ()
 {
    test_array[0] = 0;
    return (0);
 }
l1:/tmp 111 > cc +O2 -Ae -o xx xx.c
/usr/ccs/bin/ld: (Warning) At least one PA 2.0 object file (xx.o) was detected.
The linked output may not run on a PA 1.x system.
l1:/tmp 112 > cat > xx.c
 static int test_array[1 - 2 * !((unsigned long)(sizeof(unsigned char)) >= 0)];
 int main ()
 {
    test_array[0] = 0;
    return (0);
 }

l1:/tmp 113 > cc +O2 -Ae -o xx xx.c
cc: "xx.c", line 1: error 1877: Objects with linkage (internal or external) cann
ot have a variably-modified type.
Exit 1
l1:/tmp 114 >

HTH



-- 
H.Merijn Brand        Amsterdam Perl Mongers (http://amsterdam.pm.org/)
using perl-5.6.1, 5.7.1 & 630 on HP-UX 10.20 & 11.00, AIX 4.2, AIX 4.3,
     WinNT 4, Win2K pro & WinCE 2.11 often with Tk800.022 &/| DBD-Unify
ftp://ftp.funet.fi/pub/languages/perl/CPAN/authors/id/H/HM/HMBRAND/