8.3 assert.h

POSIX specification:
http://www.opengroup.org/onlinepubs/9699919799/basedefs/assert.h.html

Gnulib module: assert-h

See also the Gnulib module assert.

Portability problems fixed by Gnulib:

• The C11 and C++11 static_assert, and the C11 _Static_assert, are not supported by many platforms. For example, GCC versions before 4.6.0 do not support _Static_assert, and G++ versions through at least 4.6.0 do not support static_assert.

Portability problems not fixed by Gnulib:

• C11 _Static_assert and C++11 static_assert are keywords that can be used without including <assert.h>. The Gnulib substitutes are macros that require including <assert.h>.
• The C11 static_assert and _Static_assert can also be used within a struct or 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.
• In C99, assert can be applied to any scalar expression. In C89, the argument to assert is of type int.