From d3c87a2425b30400c3e6ea76585a9a537b6d0386 Mon Sep 17 00:00:00 2001
From: Lukasz Wiecek <lukasz@yplanapp.com>
Date: Wed, 13 Apr 2016 17:31:31 +0100
Subject: [PATCH] Fixed #26498 -- Fixed TimeField microseconds round-tripping
 on MySQL and SQLite.

Thanks adamchainz for the report and review.
---
 django/db/backends/utils.py | 2 +-
 docs/releases/1.8.13.txt    | 3 ++-
 docs/releases/1.9.6.txt     | 3 +++
 tests/db_typecasts/tests.py | 3 +++
 4 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/django/db/backends/utils.py b/django/db/backends/utils.py
index dce453b7b0..c01bcc2598 100644
--- a/django/db/backends/utils.py
+++ b/django/db/backends/utils.py
@@ -127,7 +127,7 @@ def typecast_time(s):  # does NOT store time zone information
         seconds, microseconds = seconds.split('.')
     else:
         microseconds = '0'
-    return datetime.time(int(hour), int(minutes), int(seconds), int(float('.' + microseconds) * 1000000))
+    return datetime.time(int(hour), int(minutes), int(seconds), int((microseconds + '000000')[:6]))
 
 
 def typecast_timestamp(s):  # does NOT store time zone information
diff --git a/docs/releases/1.8.13.txt b/docs/releases/1.8.13.txt
index b1a3dd0c20..f725c37f99 100644
--- a/docs/releases/1.8.13.txt
+++ b/docs/releases/1.8.13.txt
@@ -9,4 +9,5 @@ Django 1.8.13 fixes several bugs in 1.8.12.
 Bugfixes
 ========
 
-* ...
+* Fixed ``TimeField`` microseconds round-tripping on MySQL and SQLite
+  (:ticket:`26498`).
diff --git a/docs/releases/1.9.6.txt b/docs/releases/1.9.6.txt
index bf2e61a5c1..c22e99f48e 100644
--- a/docs/releases/1.9.6.txt
+++ b/docs/releases/1.9.6.txt
@@ -12,3 +12,6 @@ Bugfixes
 * Added support for relative path redirects to
   ``SimpleTestCase.assertRedirects()`` because Django 1.9 no longer converts
   redirects to absolute URIs (:ticket:`26428`).
+
+* Fixed ``TimeField`` microseconds round-tripping on MySQL and SQLite
+  (:ticket:`26498`).
diff --git a/tests/db_typecasts/tests.py b/tests/db_typecasts/tests.py
index 98748abee4..fa9eab164d 100644
--- a/tests/db_typecasts/tests.py
+++ b/tests/db_typecasts/tests.py
@@ -27,6 +27,9 @@ TEST_CASES = {
         ('00:00:12', datetime.time(0, 0, 12)),
         ('00:00:12.5', datetime.time(0, 0, 12, 500000)),
         ('7:22:13.312', datetime.time(7, 22, 13, 312000)),
+        ('12:45:30.126631', datetime.time(12, 45, 30, 126631)),
+        ('12:45:30.126630', datetime.time(12, 45, 30, 126630)),
+        ('12:45:30.123456789', datetime.time(12, 45, 30, 123456)),
     ),
     'typecast_timestamp': (
         ('', None),