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From: Harald Hanche-Olsen <hanche@math.ntnu.no>
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Cc: freebsd-ports-bugs@FreeBSD.org, ljrittle@acm.org
Subject: Re: ports/152499: Redirections in es may take effect in the shell
 itself
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I figured this one out: It seems to be a gcc optimization bug.

The problem goes away if I do

  cd /usr/ports/shells/es
  make build
  cd work/es-0.9-beta1
  rm prim-io.o
  make 'CFLAGS=-I. -pipe -fno-strict-aliasing'
  cd ../..
  make deinstall
  make reinstall

The CLAGS above are the usual CFLAGS for the build but without -O2.
Changing -O2 to -O1 is not sufficient.

What to do next? Report it to the gcc folks? What to do about the
shells/es port?

- Harald