Xref:	news2.mv.net comp.os.msdos.djgpp:4768
From:	myskin AT inp DOT nsk DOT su (Vyacheslav O. Myskin)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Not optimizing=Crash???
Date:	Fri, 07 Jun 1996 04:53:31 GMT
Organization:	BINP RAS
Lines:	24
Distribution:	world
Message-ID:	<4p8cka$biu@sky.inp.nsk.su>
References:	<1996Jun6 DOT 104656 AT zipi DOT fi DOT upm DOT es>
Reply-To:	myskin AT inp DOT nsk DOT su
NNTP-Posting-Host:	csd-bsdi.inp.nsk.su
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

a920101 AT zipi DOT fi DOT upm DOT es wrote:

>I've debugged the generated code, and I've found that the problem is GCC
>not passing the correct arguments to some functions. I call the function
>with the correct parameter (made sure of this), but it gets a wild one!

Maybe this will help somehow...
Some day I've compiled a program containing

	movedata(_my_ds(), ...);

without any optimization. _my_ds() is inline function; the compiler
did not expand it properly and the linker did not report any error,
using some garbage for _my_ds symbol value. The result was
catastrophic (of course): the progam jumped in the middle of some
function  and crashed instead of pushing %ds on the stack. Maybe this
happened because I had not put some nesessary switches on the command
line. But everything went OK when using -O.

Best wishes,
V. Myskin

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