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Re: [RFA 3/3] Special case NULL when using printf's %s format

From: Tom Tromey <tom at tromey dot com>
To: Pedro Alves <palves at redhat dot com>
Cc: Tom Tromey <tom at tromey dot com>, gdb-patches at sourceware dot org
Date: Fri, 16 Feb 2018 14:58:19 -0700
Subject: Re: [RFA 3/3] Special case NULL when using printf's %s format
Authentication-results: sourceware.org; auth=none
References: <20180215205001.337-1-tom@tromey.com> <20180215205001.337-4-tom@tromey.com> <6abda67a-ad87-ebc7-e0d4-ab60e7e4cbc6@redhat.com> <5843def6-8004-4103-188c-50125c7b3d9f@redhat.com>

Pedro> Then again, I don't think it's likely that programs map
Pedro> strings at 0 (I think it's more like interrupt vectors), so for %s,
Pedro> it's likely that nobody would miss printing 0 as a string.

Another option would be to do a try-catch and only print "(null)" on
failure, if the pointer is 0.

Tom

References:
- [RFA 0/3] a few minor printf fixes
  - From: Tom Tromey
- [RFA 3/3] Special case NULL when using printf's %s format
  - From: Tom Tromey
- Re: [RFA 3/3] Special case NULL when using printf's %s format
  - From: Pedro Alves
- Re: [RFA 3/3] Special case NULL when using printf's %s format
  - From: Pedro Alves

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