From:	rtr AT rd DOT bbc DOT co DOT uk (Richard Russell)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Curious floating point exception errors
Date:	4 Sep 1997 14:08:01 GMT
Organization:	British Broadcasting Corporation, UK
Lines:	20
Message-ID:	<5umfc1$it6@bbcnews.rd.bbc.co.uk>
NNTP-Posting-Host:	132.185.128.19
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

I have a program which compiles with gcc and runs perfectly on a Sun SPARC.
When compiled with DJGPP on a PC it fails with an FPESIG exception.
Something very odd is happening because inserting a diagnostic printf will
sometimes, by itself, cure the problem.  Even more'ing the output can make
a difference, which suggests that perhaps the absolute address at which the
code is loading is somehow affecting things.

I might be inclined to suspect the PC's hardware except that the problem
is repeatable and occurs on more than one machine.  I can find no bugs
in the C code, such as uninitialised arrays.

gcc -v gives:
Reading specs from c:/dgjpp/lib\specs
gcc version 2.7.2.1

Any ideas ?

Richard.

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