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Re: gets with C++ and GCC before 4.7

From: Roland McGrath <roland at hack dot frob dot com>
To: Ulrich Drepper <drepper at gmail dot com>
Cc: "Joseph S. Myers" <joseph at codesourcery dot com>, libc-alpha at sourceware dot org
Date: Tue, 6 Mar 2012 15:19:58 -0800 (PST)
Subject: Re: gets with C++ and GCC before 4.7
References: <Pine.LNX.4.64.1203052335580.17538@digraph.polyomino.org.uk><CAOPLpQcbCL4c21rGO+3amRZHxnNHCbCCS2_-DS8=Y8A=9XZobw@mail.gmail.com>

> As I said in the gcc bug, gcc should define a macro if the declaration
> is needed and this macro should be defined only when absolutely
> necessary.

No solution in that direction works without modifying GCC releases that
have already been made.  Getting 4.7 and later to define a macro that says
the declaration can safely be omitted seems like a better bet.

Your general point applies to basically any use of __GNUC_PREREQ.
In practice, people using modified GCC versions with backports have
indeed changed glibc headers to match in their modified glibc versions.

Follow-Ups:
- Re: gets with C++ and GCC before 4.7
  - From: Joseph S. Myers
- Re: gets with C++ and GCC before 4.7
  - From: Ulrich Drepper

References:
- gets with C++ and GCC before 4.7
  - From: Joseph S. Myers
- Re: gets with C++ and GCC before 4.7
  - From: Ulrich Drepper

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