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Re: Problem compiling DDD-3.3 on Solaris 8/SPARC (and possible fix?)


From: Andreas Zeller
Subject: Re: Problem compiling DDD-3.3 on Solaris 8/SPARC (and possible fix?)
Date: 09 Mar 2001 10:58:10 +0100
User-agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.1 (Cuyahoga Valley)

Hi!

Mike Bland <address@hidden> writes:

> Since this is a compile-time problem, please forgive my exclusion of DDD
> configuration/log information.  Here is the vital info:
> 
>       DDD version:    3.3
>       OS:             Solaris 8
>       Arch:           sparcv9
>       g++ version:    2.95.2 19991024
> 
> A transcript of the compiler output follows.  In the file SourceView.C,
> I'm getting errors for two lines of code which are both identical to:
> 
>       next_l = ULONG_MAX;
> 
> The g++ warning/error messages are:
> 
>       integer constant out of range
>       warning: decimal integer constant is so large that it is unsigned
> 
> The two instances appear in:
> 
>       static bool SourceView::function_is_larger_than(string, int)
>       static void SourceView::show_pc(const string &, XmHighlightMode =
>               XmHIGHLIGHT_NORMAL, bool = false, bool = false)
> 
> I suspect this is because the 64-bit ULONG_MAX goes far beyond the 32-bit
> unsigned long that g++ is capable of producing.

Hmmm - normally, ULONG_MAX should fit into an `unsigned long' without
any problems.  I have cc'ed this reply to the GCC maintainers.

The `official' workaround is already in the source file:

#ifndef ULONG_MAX
#define ULONG_MAX       ((unsigned long)(~0L))          /* 0xFFFFFFFF */
#endif

This should work on most, if not all, architectures.  If the problem
persists with future GCC releases, I'll make the DDD `configure'
script check for it.

Best wishes,

Andreas

-- 
Andreas Zeller     Universitaet Passau
                   http://www.fmi.uni-passau.de/st/staff/zeller/



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