From dea41f3c3a003a22893b27eead429f963d3230c3 Mon Sep 17 00:00:00 2001
From: "Christoph M. Becker" <cmbecker69@gmx.de>
Date: Wed, 6 Sep 2017 23:30:53 +0200
Subject: [PATCH] Fixed bug #44995 (bcpowmod() fails if scale != 0)

`bc_divmod()` is supposed to do integer division, so we must not apply
a scale factor here.
---
 NEWS                              |  3 +++
 ext/bcmath/libbcmath/src/divmod.c |  2 +-
 ext/bcmath/tests/bug44995.phpt    | 16 ++++++++++++++++
 3 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 ext/bcmath/tests/bug44995.phpt

diff --git a/NEWS b/NEWS
index 3bb2a0791a5..377f4d15406 100644
--- a/NEWS
+++ b/NEWS
@@ -5,6 +5,9 @@ PHP                                                                        NEWS
 - Core:
   . Fixed #75042 run-tests.php issues with EXTENSION block). (John Boehr)
 
+- BCMath:
+  . Fixed bug #44995 (bcpowmod() fails if scale != 0). (cmb)
+
 - CLI server:
   . Fixed bug #70470 (Built-in server truncates headers spanning over TCP
     packets). (bouk)
diff --git a/ext/bcmath/libbcmath/src/divmod.c b/ext/bcmath/libbcmath/src/divmod.c
index d7aaa3509da..08c2f8a2a2d 100644
--- a/ext/bcmath/libbcmath/src/divmod.c
+++ b/ext/bcmath/libbcmath/src/divmod.c
@@ -59,7 +59,7 @@ bc_divmod (bc_num num1, bc_num num2, bc_num *quot, bc_num *rem, int scale)
   bc_init_num(&temp);
 
   /* Calculate it. */
-  bc_divide (num1, num2, &temp, scale);
+  bc_divide (num1, num2, &temp, 0);
   if (quot)
     quotient = bc_copy_num (temp);
   bc_multiply (temp, num2, &temp, rscale);
diff --git a/ext/bcmath/tests/bug44995.phpt b/ext/bcmath/tests/bug44995.phpt
new file mode 100644
index 00000000000..6eb591f92b7
--- /dev/null
+++ b/ext/bcmath/tests/bug44995.phpt
@@ -0,0 +1,16 @@
+--TEST--
+Bug #44995 (bcpowmod() fails if scale != 0)
+--SKIPIF--
+<?php
+if (!extension_loaded('bcmath')) die('skip bcmath extension not available');
+?>
+--FILE--
+<?php
+var_dump(bcpowmod('4', '4', '3', 1));
+var_dump(bcpowmod('3234', '32345', '22345', 1));
+?>
+===DONE===
+--EXPECT--
+string(3) "1.0"
+string(7) "17334.0"
+===DONE===