* doc/cpp.texi (Obsolete Features): Add background on the
origin of assertions.
From-SVN: r170261
+2011-02-18 Gerald Pfeifer <gerald@pfeifer.com>
+
+ * doc/cpp.texi (Obsolete Features): Add background on the
+ origin of assertions.
+
2011-02-17 Iain Sandoe <iains@gcc.gnu.org>
* config/darwin-c.c (darwin_cpp_builtins): Define __OBJC2__ for
2011-02-17 Iain Sandoe <iains@gcc.gnu.org>
* config/darwin-c.c (darwin_cpp_builtins): Define __OBJC2__ for
define them with preprocessing directives or command-line options.
Assertions were intended to provide a more systematic way to describe
define them with preprocessing directives or command-line options.
Assertions were intended to provide a more systematic way to describe
-the compiler's target system. However, in practice they are just as
-unpredictable as the system-specific predefined macros. In addition, they
-are not part of any standard, and only a few compilers support them.
+the compiler's target system and we added them for compatibility with
+existing compilers. In practice they are just as unpredictable as the
+system-specific predefined macros. In addition, they are not part of
+any standard, and only a few compilers support them.
Therefore, the use of assertions is @strong{less} portable than the use
of system-specific predefined macros. We recommend you do not use them at
all.
Therefore, the use of assertions is @strong{less} portable than the use
of system-specific predefined macros. We recommend you do not use them at
all.