Build failure on itanium/IA64

[J.H.M. Dassen (Ray)]

DDD 3.3.1 fails to build on IA64, due to a difference in type sizes:
c++ -DHAVE_CONFIG_H -I. -I../../ddd -I. -I../../ddd/..     -DNDEBUG -O2 -O2 
-Werror -W -Wall -trigraphs  -c ../../ddd/ddd.C
cc1plus: warnings being treated as errors
../../ddd/ddd.C: In function `void BlinkCB (void *, XtIntervalId *)':
../../ddd/ddd.C:5350: warning: cast to pointer from integer of 
different size
make[2]: *** [ddd.o] Error 1

The complete build log is available via
        http://buildd.debian.org/build.php?arch=&pkg=ddd 
There are no problems building DDD on other architectures like i386, Sparc,
alpha, (big or little endian) MIPS, PowerPC or m68k.

I'd appreciate suggestions as to how to fix this problem, or how to work
around it in a reasonable way.

Greetings,
Ray
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