Mercurial > gnulib
view doc/posix-headers/stdbool.texi @ 16358:a712776b11ce
maint: spelling fixes
author | Paul Eggert <eggert@cs.ucla.edu> |
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date | Sun, 05 Feb 2012 13:42:03 -0800 |
parents | 3d497ee2707b |
children | 679194d50123 |
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@node stdbool.h @section @file{stdbool.h} POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/basedefs/stdbool.h.html} Gnulib module: stdbool Portability problems fixed by Gnulib: @itemize @item This header file is missing on some platforms: AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1. @item Some compilers have bugs relating to @samp{bool}. @item This header file defines @code{true} incorrectly on some platforms: OpenBSD 4.7 with gcc 2.95. @end itemize Portability problems not fixed by Gnulib: @itemize @item @code{<stdbool.h>} must be #included before @samp{_Bool} can be used. @item You cannot assume that @code{_Bool} is a typedef; it might be a macro. @item Bit-fields of type @samp{bool} are not supported. Portable code should use @samp{unsigned int foo : 1;} rather than @samp{bool foo : 1;}. @item Casts and automatic conversions to @samp{bool} don't test against the zero value or the null pointer, as they should. Such casts should only be used if the value is known to be equal to 0 or 1. @item You cannot assume that casting a floating point literal to @samp{bool} will result in a constant expression. @end itemize