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Re: [PATCH] debug/tst-longjmp_chk2: Make signal handler more conservative [BZ #20248]

From: Paul Eggert <eggert at cs dot ucla dot edu>
To: Joseph Myers <joseph at codesourcery dot com>
Cc: Florian Weimer <fweimer at redhat dot com>, libc-alpha at sourceware dot org
Date: Wed, 15 Jun 2016 15:35:26 -0700
Subject: Re: [PATCH] debug/tst-longjmp_chk2: Make signal handler more conservative [BZ #20248]
Authentication-results: sourceware.org; auth=none
References: <20160613111111 dot 79B3D4022A42D at oldenburg dot str dot redhat dot com> <20160613140304 dot GT4053 at vapier dot lan> <e6a3257b-f9f6-a17f-5ec7-d8e5b9486237 at redhat dot com> <20160613184252 dot GV4053 at vapier dot lan> <c00dd1ed-6929-2ac6-1f51-6a927222bf2a at redhat dot com> <5761A0B4 dot 2050804 at cs dot ucla dot edu> <alpine dot DEB dot 2 dot 20 dot 1606152207240 dot 13501 at digraph dot polyomino dot org dot uk>

On 06/15/2016 03:10 PM, Joseph Myers wrote:

that longstanding idiom implies people seeing a warning and
blindly applying it, without thinking about whether there is a real bug

Sure, but now with Gnulib, ignore_value (E) is the new idiom for (void)(E). A careless developer blindly applying ignore_value now is like acareless developer blindly applying a void cast in the good olddays.Nothing has changed, really.

If GCC changes again in this area, I hope Gnulib's ignore_valuecontinues to work. It would be a pain to have yet another musical-chairsperiod during which there is needless confusion.

References:
- [PATCH] debug/tst-longjmp_chk2: Make signal handler more conservative [BZ #20248]
  - From: Florian Weimer
- Re: [PATCH] debug/tst-longjmp_chk2: Make signal handler more conservative [BZ #20248]
  - From: Mike Frysinger
- Re: [PATCH] debug/tst-longjmp_chk2: Make signal handler more conservative [BZ #20248]
  - From: Florian Weimer
- Re: [PATCH] debug/tst-longjmp_chk2: Make signal handler more conservative [BZ #20248]
  - From: Mike Frysinger
- Re: [PATCH] debug/tst-longjmp_chk2: Make signal handler more conservative [BZ #20248]
  - From: Florian Weimer
- Re: [PATCH] debug/tst-longjmp_chk2: Make signal handler more conservative [BZ #20248]
  - From: Paul Eggert
- Re: [PATCH] debug/tst-longjmp_chk2: Make signal handler more conservative [BZ #20248]
  - From: Joseph Myers

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