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Re: [patch] libjava: avoid using escape sequence with undefined behaviourin echo

From: Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>
To: Matthias Klose <doko at cs dot tu-berlin dot de>
Cc: gcc-patches at gcc dot gnu dot org, mark at codesourcery dot com, java-patches at gcc dot gnu dot org
Date: Sun, 18 Sep 2005 13:16:02 +0200
Subject: Re: [patch] libjava: avoid using escape sequence with undefined behaviourin echo
References: <17197.4463.990163.590748@gargle.gargle.HOWL>

Matthias Klose wrote:

When using ash as system and config shell, the bootstrap fails in libjava,
because a wrong Makefile.deps is generated. echo '\1\2' in ash just
echoes ^A^B. ash claims that these escape sequences elicit undefined
behaviour.

This rule was introduced in the 4.0 branch after 4.0.1, before that
change libjava used to build using ash, proposing this change for the
4.0 branch as well.

Ok to checkin?

I don't oppose such a patch, but still, ash is completely not POSIX and this single noncompliancy will break a good percentage of sed scripts.

Paolo

Follow-Ups:
- Re: [patch] libjava: avoid using escape sequence with undefined behaviourin echo
  - From: Mark Mitchell
- Re: [patch] libjava: avoid using escape sequence with undefined behaviour in echo
  - From: Ian Lance Taylor

References:
- [patch] libjava: avoid using escape sequence with undefined behaviour in echo
  - From: Matthias Klose

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