diff --git a/SOURCES/php-bug79657.patch b/SOURCES/php-bug79657.patch
new file mode 100644
index 0000000..a787b3e
--- /dev/null
+++ b/SOURCES/php-bug79657.patch
@@ -0,0 +1,74 @@
+From df2db7fceaff4f46909f1aa8b31f0a9010631fc9 Mon Sep 17 00:00:00 2001
+From: Nikita Popov <nikita.ppv@gmail.com>
+Date: Mon, 8 Jun 2020 11:31:28 +0200
+Subject: [PATCH] Fixed bug #79657
+
+Throwing an exception should count as an initialization for this
+purpose.
+---
+ NEWS                     |  2 ++
+ Zend/tests/bug79657.phpt | 42 ++++++++++++++++++++++++++++++++++++++++
+ Zend/zend_generators.c   |  1 +
+ 3 files changed, 45 insertions(+)
+ create mode 100644 Zend/tests/bug79657.phpt
+
+diff --git a/Zend/tests/bug79657.phpt b/Zend/tests/bug79657.phpt
+new file mode 100644
+index 000000000000..fb2ccab3e3ef
+--- /dev/null
++++ b/Zend/tests/bug79657.phpt
+@@ -0,0 +1,42 @@
++--TEST--
++Bug #79657: "yield from" hangs when invalid value encountered
++--FILE--
++<?php
++
++function throwException(): iterable
++{
++    throw new Exception();
++}
++
++function loop(): iterable
++{
++    $callbacks = [
++        function () {
++            yield 'first';
++        },
++        function () {
++            yield from throwException();
++        }
++    ];
++
++    foreach ($callbacks as $callback) {
++        yield from $callback();
++    }
++}
++
++function get(string $first, int $second): array
++{
++    return [];
++}
++
++get(...loop());
++
++?>
++--EXPECTF--
++Fatal error: Uncaught Exception in %s:%d
++Stack trace:
++#0 %s(%d): throwException()
++#1 %s(%d): {closure}()
++#2 %s(%d): loop()
++#3 {main}
++  thrown in %s on line %d
+diff --git a/Zend/zend_generators.c b/Zend/zend_generators.c
+index 4cd9087303a3..15bbfca1c58a 100644
+--- a/Zend/zend_generators.c
++++ b/Zend/zend_generators.c
+@@ -857,6 +857,7 @@ ZEND_API void zend_generator_resume(zend_generator *orig_generator) /* {{{ */
+ 			} else {
+ 				generator = zend_generator_get_current(orig_generator);
+ 				zend_generator_throw_exception(generator, NULL);
++				orig_generator->flags &= ~ZEND_GENERATOR_DO_INIT;
+ 				goto try_again;
+ 			}
+ 		}
diff --git a/SPECS/php.spec b/SPECS/php.spec
index b03102b..94721af 100644
--- a/SPECS/php.spec
+++ b/SPECS/php.spec
@@ -60,7 +60,7 @@
 Summary: PHP scripting language for creating dynamic web sites
 Name: php
 Version: %{upver}%{?rcver:~%{rcver}}
-Release: 3%{?dist}
+Release: 4%{?dist}
 # All files licensed under PHP version 3.01, except
 # Zend is licensed under Zend
 # TSRM is licensed under BSD
@@ -109,6 +109,7 @@ Patch47: php-5.6.3-phpinfo.patch
 
 # Upstream fixes (100+)
 Patch100: php-bug79600.patch
+Patch101: php-bug79657.patch
 
 # Security fixes (200+)
 
@@ -721,6 +722,7 @@ in pure PHP.
 
 # upstream patches
 %patch100 -p1 -b .bug79600
+%patch101 -p1 -b .bug79657
 
 # security patches
 
@@ -1513,6 +1515,9 @@ systemctl try-restart php-fpm.service >/dev/null 2>&1 || :
 
 
 %changelog
+* Mon Jun 15 2020 Remi Collet <rcollet@redhat.com> - 7.4.6-4
+- fix regression in 7.4.6 with generators and exception
+
 * Wed May 27 2020 Remi Collet <rcollet@redhat.com> - 7.4.6-3
 - build phpdbg only once
 - fix regression in 7.4.6 when yielding an array based generator