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Re: Problem with stdbool.h redefining true/false even in C++
From: |
Bastien ROUCARIES |
Subject: |
Re: Problem with stdbool.h redefining true/false even in C++ |
Date: |
Wed, 29 Aug 2012 20:13:37 +0200 |
n Wed, Aug 29, 2012 at 7:36 PM, John W. Eaton <address@hidden> wrote:
> On 29-Aug-2012, Paul Eggert wrote:
>
> | On 08/29/2012 10:00 AM, John W. Eaton wrote:
> | > Why define true, false, and bool to anything when using C++?
> |
> | Maybe it's for '#ifdef bool' but to be honest I'm just doing what
> | GCC does. Perhaps you can ask the GCC developers why they do did
> | it that way....
> |
> | Anyway, I'd be surprised if Octave cares whether true, false, and bool
> | are macros. If it does, then it's broken on GNUish hosts anyway,
> | right? And if it doesn't, the gnulib patch should work as-is.
>
> No, I don't think Octave currently has any checks like this.
>
> For C++ code, I think '#ifdef bool' will be false. So
> '#define bool bool' switches the meaning. Should that happen if
> stdbool.h has been included? I don't know.
echo -e "#include <stdbool.h> \n #ifdef bool \n echo \n#endif" | g++ -E -
# 1 "<stdin>"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "<stdin>"
# 1 "/usr/lib/gcc/x86_64-linux-gnu/4.6/include/stdbool.h" 1 3 4
# 2 "<stdin>" 2
echo
>
> This problem was a surprise to me because we don't include
> stdbool.h directly in Octave C++ sources.
>
> jwe
>
- Re: Problem with stdbool.h redefining true/false even in C++, (continued)
- Re: Problem with stdbool.h redefining true/false even in C++, Michael Goffioul, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++, Michael Goffioul, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++, John W. Eaton, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++, John W. Eaton, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++, Paul Eggert, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++, Michael Goffioul, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++, Paul Eggert, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++, Michael Goffioul, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++, Paul Eggert, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++, John W. Eaton, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++,
Bastien ROUCARIES <=
- Re: Problem with stdbool.h redefining true/false even in C++, John W. Eaton, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++, Daniel J Sebald, 2012/08/29
- Re: Problem with stdbool.h redefining true/false even in C++, Paul Eggert, 2012/08/29