Add release notes for type safety attributes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162102 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 19 insertions, 0 deletions

diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index 2108909c97..7a6a508bb5 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -186,6 +186,25 @@ supported by the target, or if the compiler determines that a more specific
 model can be used.
 </p>
 
+<h4>Type safety attributes</h4>
+<p>Clang now supports type safety attributes that allow checking during compile
+time that 'void *' function arguments and arguments for variadic functions are
+of a particular type which is determined by some other argument to the same
+function call.</p>
+
+<p>Usecases include:</p>
+<ul>
+<li>MPI library implementations, where these attributes enable checking that
+  buffer type matches the passed <code>MPI_Datatype</code>;</li>
+<li> HDF5 library -- similar usecase as for MPI;</li>
+<li> checking types of variadic functions' arguments for functions like
+<code>fcntl()</code> and <code>ioctl()</code>.</li>
+</ul>
+
+<p>See entries for <code>argument_with_type_tag</code>,
+<code>pointer_with_type_tag</code> and <code>type_tag_for_datatype</code>
+attributes in Clang language extensions documentation.</p>
+
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