Migrate to Sphinx 1.0 C language constructs.
diff --git a/Doc/library/posix.rst b/Doc/library/posix.rst
index d65b999..07db2b2 100644
--- a/Doc/library/posix.rst
+++ b/Doc/library/posix.rst
@@ -38,13 +38,13 @@
Several operating systems (including AIX, HP-UX, Irix and Solaris) provide
support for files that are larger than 2 GB from a C programming model where
-:ctype:`int` and :ctype:`long` are 32-bit values. This is typically accomplished
+:c:type:`int` and :c:type:`long` are 32-bit values. This is typically accomplished
by defining the relevant size and offset types as 64-bit values. Such files are
sometimes referred to as :dfn:`large files`.
-Large file support is enabled in Python when the size of an :ctype:`off_t` is
-larger than a :ctype:`long` and the :ctype:`long long` type is available and is
-at least as large as an :ctype:`off_t`.
+Large file support is enabled in Python when the size of an :c:type:`off_t` is
+larger than a :c:type:`long` and the :c:type:`long long` type is available and is
+at least as large as an :c:type:`off_t`.
It may be necessary to configure and compile Python with certain compiler flags
to enable this mode. For example, it is enabled by default with recent versions
of Irix, but with Solaris 2.6 and 2.7 you need to do something like::