--- /dev/null
+++ b/Zend/tests/bug53632.phpt
@@ -0,0 +1,10 @@
+--TEST--
+zend_strtod() hangs with 2.2250738585072011e-308
+--FILE--
+<?php
+$d = 2.2250738585072011e-308;
+
+echo "Done\n";
+?>
+--EXPECTF--	
+Done
--- a/Zend/zend_strtod.c
+++ b/Zend/zend_strtod.c
@@ -2045,7 +2045,7 @@ ZEND_API double zend_strtod (CONST char
 	int bb2, bb5, bbe, bd2, bd5, bbbits, bs2, c, dsign,
 		e, e1, esign, i, j, k, nd, nd0, nf, nz, nz0, sign;
 	CONST char *s, *s0, *s1;
-	double aadj, aadj1, adj;
+	volatile double aadj, aadj1, adj;
 	volatile _double rv, rv0;
 	Long L;
 	ULong y, z;