Date:	Fri, 14 May 1999 07:04:22 +0200
From:	Ronald de Man <deman AT win DOT tue DOT nl>
To:	pgcc AT delorie DOT com
Subject:	bug in pgcc-1.1.1
Message-ID:	<19990514070422.A1583@win.tue.nl>
Mime-Version:	1.0
X-Mailer:	Mutt 0.95.4i
X-Operating-System:	Linux localhost 2.2.8
Reply-To:	pgcc AT delorie DOT com

Hello,

While compiling xdvi-22, pgcc-1.1.1 reported an internal compiler error.
I tracked it down to the following lines which seem to form a minimal
configuration that will still give the error:

#include <math.h>

#define	rint(x)	floor((x) + 0.5)

main()
{
  float	b = cos(0);

  f(rint(b), rint(b));
  f(rint(b), rint(b));
}

When I try to compile it:
$ gcc -O2 -c bug.c
../../egcs-1.1.1/gcc/caller-save.c:657: Internal compiler error in function insert_save_restore

Compiling it with -O makes the problem go away.
What I don't understand is that first preprocessing the file with gcc -E,
then running gcc -O2 on the output also works:

$ gcc -E bug.c > nobug.c
$ gcc -O2 -c nobug.c

Of course this bug might already have been solved in egcs-1.1.2/pgcc-1.1.3,
but I haven't yet compiled those.

Ronald

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