From b6efe6e06fa70e8933440da26474a804fb3edb6e Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Wed, 7 Sep 2016 10:55:40 -0700
Subject: [PATCH] allow some c99

---
 pep-0007.txt | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/pep-0007.txt b/pep-0007.txt
index aa1ea0bb0a4..dbc4cf805a3 100644
--- a/pep-0007.txt
+++ b/pep-0007.txt
@@ -31,9 +31,22 @@ particular rule:
 C dialect
 =========
 
-* Use ANSI/ISO standard C (the 1989 version of the standard).  This
-  means (amongst many other things) that all declarations must be at
-  the top of a block (not necessarily at the top of function).
+* Python versions before 3.6 use ANSI/ISO standard C (the 1989 version
+  of the standard).  This means (amongst many other things) that all
+  declarations must be at the top of a block (not necessarily at the
+  top of function).
+
+* Python versions greater than or equal to 3.6 use C89 with several
+  select C99 features:
+
+  - Standard integer types in ``<stdint.h>`` and ``<inttypes.h>``
+  - ``static inline`` functions
+  - designated initializers (especially nice for type declarations)
+  - intermingled declarations
+  - booleans
+
+  Future C99 features may be added to this list in the future
+  depending on compiler support (mostly significantly MSVC).
 
 * Don't use GCC extensions (e.g. don't write multi-line strings
   without trailing backslashes).