diff --git a/NEWS b/NEWS
index 1467bac7be467..87d03eee1462f 100644
--- a/NEWS
+++ b/NEWS
@@ -8,6 +8,7 @@ PHP                                                                        NEWS
   . Fixed bug GH-19637 (Incorrect Closure scope for FCC in constant
     expression). (timwolla)
   . Fixed bug GH-19613 (Stale array iterator pointer). (ilutov)
+  . Fixed bug GH-19679 (zend_ssa_range_widening may fail to converge). (Arnaud)
 
 - Date:
   . Fixed date_sunrise() and date_sunset() with partial-hour UTC offset.
@@ -57,8 +58,7 @@ PHP                                                                        NEWS
   . Fixed bug GH-19476 (pipe operator fails to correctly handle returning
     by reference). (alexandre-daubois)
   . The report_memleaks INI directive has been deprecated. (alexandre-daubois)
-  . Constant redeclaration is deprecated and this behavior will trigger an
-    error in PHP 9. (alexandre-daubois)
+  . Constant redeclaration has been deprecated. (alexandre-daubois)
   . Fixed OSS-Fuzz #439125710 (Pipe cannot be used in write context).
     (nielsdos)
   . Added support for configuring the URI parser for the FTP/FTPS as well as
diff --git a/UPGRADING b/UPGRADING
index 9973a1a42eb7d..1a902108c234d 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -360,8 +360,7 @@ PHP 8.5 UPGRADE NOTES
     RFC: https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_debuginfo_returning_null
   . The report_memleaks INI directive has been deprecated.
     RFC: https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_the_report_memleaks_ini_directive
-  . Constant redeclaration is deprecated and that behavior will trigger an
-    error in PHP 9.
+  . Constant redeclaration has been deprecated.
     RFC: https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_constant_redeclaration
   . Enacted the follow-up phase of the "Path to Saner Increment/Decrement
     operators" RFC, meaning that incrementing non-numeric strings is now
diff --git a/Zend/Optimizer/zend_inference.c b/Zend/Optimizer/zend_inference.c
index f146a741439d5..62e04cb0e306b 100644
--- a/Zend/Optimizer/zend_inference.c
+++ b/Zend/Optimizer/zend_inference.c
@@ -1623,12 +1623,16 @@ static bool zend_inference_widening_meet(zend_ssa_var_info *var_info, zend_ssa_r
 		    r->min < var_info->range.min) {
 			r->underflow = 1;
 			r->min = ZEND_LONG_MIN;
+		} else {
+			r->min = var_info->range.min;
 		}
 		if (r->overflow ||
 		    var_info->range.overflow ||
 		    r->max > var_info->range.max) {
 			r->overflow = 1;
 			r->max = ZEND_LONG_MAX;
+		} else {
+			r->max = var_info->range.max;
 		}
 		if (var_info->range.min == r->min &&
 		    var_info->range.max == r->max &&
diff --git a/Zend/tests/gh19679.phpt b/Zend/tests/gh19679.phpt
new file mode 100644
index 0000000000000..ab7f3be344d22
--- /dev/null
+++ b/Zend/tests/gh19679.phpt
@@ -0,0 +1,22 @@
+--TEST--
+GH-19679: zend_ssa_range_widening does not converge
+--SKIPIF--
+<?php
+if (PHP_INT_SIZE !== 8) {
+  die('skip output depends PHP_INT_SIZE=8');
+}
+?>
+--FILE--
+<?php
+function test() {
+    $a = PHP_INT_MIN+1;
+    $b = 0;
+    while ($b++ < 3) {
+        $a = (int) ($a-- - $b - 1);
+    }
+    return $a;
+}
+var_dump(test() == PHP_INT_MIN);
+?>
+--EXPECT--
+bool(true)