From f402e922f36a1f5fb5cc8fd87022761c6ee68c20 Mon Sep 17 00:00:00 2001
From: Christian Heimes <christian@cheimes.de>
Date: Thu, 3 Jan 2013 09:21:55 +0100
Subject: [PATCH] Issue #16847: Fixed improper use of
 _PyUnicode_CheckConsistency() in non-pydebug builds. Several extension
 modules now compile cleanly when assert()s are enabled in standard builds
 (-DDEBUG flag).

---
 Misc/NEWS              | 4 ++++
 Modules/_json.c        | 2 ++
 Modules/md5module.c    | 2 ++
 Modules/sha1module.c   | 2 ++
 Modules/sha256module.c | 2 ++
 Modules/sha512module.c | 2 ++
 6 files changed, 14 insertions(+)

diff --git a/Misc/NEWS b/Misc/NEWS
index e4fd504eb3..41126a6e43 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -4293,6 +4293,10 @@ Tools/Demos
 Extension Modules
 -----------------
 
+- Issue #16847: Fixed improper use of _PyUnicode_CheckConsistency() in
+  non-pydebug builds. Several extension modules now compile cleanly when
+  assert()s are enabled in standard builds (-DDEBUG flag).
+
 - Issue #13840: The error message produced by ctypes.create_string_buffer
   when given a Unicode string has been fixed.
 
diff --git a/Modules/_json.c b/Modules/_json.c
index 5b42f6f718..db45c28fe4 100644
--- a/Modules/_json.c
+++ b/Modules/_json.c
@@ -246,7 +246,9 @@ ascii_escape_unicode(PyObject *pystr)
         }
     }
     output[chars++] = '"';
+#ifdef Py_DEBUG
     assert(_PyUnicode_CheckConsistency(rval, 1));
+#endif
     return rval;
 }
 
diff --git a/Modules/md5module.c b/Modules/md5module.c
index e2681a8ae5..12e187cb94 100644
--- a/Modules/md5module.c
+++ b/Modules/md5module.c
@@ -399,7 +399,9 @@ MD5_hexdigest(MD5object *self, PyObject *unused)
         c = (digest[i] & 0xf);
         hex_digest[j++] = Py_hexdigits[c];
     }
+#ifdef Py_DEBUG
     assert(_PyUnicode_CheckConsistency(retval, 1));
+#endif
     return retval;
 }
 
diff --git a/Modules/sha1module.c b/Modules/sha1module.c
index a733c4b5bb..09b87ef250 100644
--- a/Modules/sha1module.c
+++ b/Modules/sha1module.c
@@ -376,7 +376,9 @@ SHA1_hexdigest(SHA1object *self, PyObject *unused)
         c = (digest[i] & 0xf);
         hex_digest[j++] = Py_hexdigits[c];
     }
+#ifdef Py_DEBUG
     assert(_PyUnicode_CheckConsistency(retval, 1));
+#endif
     return retval;
 }
 
diff --git a/Modules/sha256module.c b/Modules/sha256module.c
index 76d91afda3..9f6b41639c 100644
--- a/Modules/sha256module.c
+++ b/Modules/sha256module.c
@@ -466,7 +466,9 @@ SHA256_hexdigest(SHAobject *self, PyObject *unused)
         c = (digest[i] & 0xf);
         hex_digest[j++] = Py_hexdigits[c];
     }
+#ifdef Py_DEBUG
     assert(_PyUnicode_CheckConsistency(retval, 1));
+#endif
     return retval;
 }
 
diff --git a/Modules/sha512module.c b/Modules/sha512module.c
index 88f8a64d06..5536fd5c1c 100644
--- a/Modules/sha512module.c
+++ b/Modules/sha512module.c
@@ -532,7 +532,9 @@ SHA512_hexdigest(SHAobject *self, PyObject *unused)
         c = (digest[i] & 0xf);
         hex_digest[j++] = Py_hexdigits[c];
     }
+#ifdef Py_DEBUG
     assert(_PyUnicode_CheckConsistency(retval, 1));
+#endif
     return retval;
 }
 
-- 
2.50.0