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Re: [PATCH][4.3] Deprecate -ftrapv

From: David Daney <ddaney at avtrex dot com>
To: Mark Mitchell <mark at codesourcery dot com>
Cc: Richard Guenther <rguenther at suse dot de>, gcc-patches at gcc dot gnu dot org, gcc at gcc dot gnu dot org
Date: Fri, 29 Feb 2008 16:16:13 -0800
Subject: Re: [PATCH][4.3] Deprecate -ftrapv
References: <Pine.LNX.4.64.0803010041110.4133@zhemvz.fhfr.qr> <47C89DB1.6030200@codesourcery.com>

Mark Mitchell wrote:

Richard Guenther wrote:
This is a request to depcrecate -ftrapv which has numerous problems
making it not work as expected since a long time.  As nobody seems
to have the energy to ensure it is working I propose to deprecate it
for GCC 4.3 to make it possible to remove it during 4.4 (and not
block removing libcall notes by it).
Why doesn't it work? Can it be made to work relatively easily? Do we need functionality like this for Ada or Java?

Java only traps on integer division by zero. As I understand it, this is handled by a different mechanism.

David Daney

Follow-Ups:
- Re: [PATCH][4.3] Deprecate -ftrapv
  - From: Robert Dewar

References:
- Re: [PATCH][4.3] Deprecate -ftrapv
  - From: Mark Mitchell

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