NEWS.stable: log cherry-pick [e446f25]->[c092018] relocatable-shell: Update suggested...

[gnulib.git] / doc / posix-headers / assert.texi

diff --git a/doc/posix-headers/assert.texi b/doc/posix-headers/assert.texi
index ef4c7b3..785a07a 100644 (file)
--- a/doc/posix-headers/assert.texi
+++ b/doc/posix-headers/assert.texi
@@ -1,14 +1,33 @@
 @node assert.h
 @section @file{assert.h}
 
-POSIX specification:@* @url{http://www.opengroup.org/susv3xbd/assert.h.html}
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/basedefs/assert.h.html}
 
-Gnulib module: ---
+Gnulib module: assert-h
+
+See also the Gnulib module @code{assert}.
 
 Portability problems fixed by Gnulib:
 @itemize
+@item
+The C11 and C++11 @code{static_assert}, and the C11
+@code{_Static_assert}, are not supported by many platforms.
+For example, GCC versions before 4.6.0 do not support @code{_Static_assert},
+and G++ versions through at least 4.6.0 do not support @code{static_assert}.
 @end itemize
 
 Portability problems not fixed by Gnulib:
 @itemize
+@item
+C11 @code{_Static_assert} and C++11 @code{static_assert}
+are keywords that can be used without including @code{<assert.h>}.
+The Gnulib substitutes are macros that require including @code{<assert.h>}.
+@item
+The C11 @code{static_assert} and @code{_Static_assert} can also
+be used within a @code{struct} or @code{union} specifier, in place of
+an ordinary declaration of a member of the struct or union.  The
+Gnulib substitute can be used only as an ordinary declaration.
+@item
+In C99, @code{assert} can be applied to any scalar expression.
+In C89, the argument to @code{assert} is of type @code{int}.
 @end itemize