diff --git a/src/Extension/CoreExtension.php b/src/Extension/CoreExtension.php
index 684e98301..6642cff1b 100644
--- a/src/Extension/CoreExtension.php
+++ b/src/Extension/CoreExtension.php
@@ -944,25 +944,25 @@ function twig_compare($a, $b)
 {
     // int <=> string
     if (\is_int($a) && \is_string($b)) {
-        $b = trim($b);
-        if (!is_numeric($b)) {
+        $bTrim = trim($b, " \t\n\r\v\f");
+        if (!is_numeric($bTrim)) {
             return (string) $a <=> $b;
         }
-        if ((int) $b == $b) {
-            return $a <=> (int) $b;
+        if ((int) $bTrim == $bTrim) {
+            return $a <=> (int) $bTrim;
         } else {
-            return (float) $a <=> (float) $b;
+            return (float) $a <=> (float) $bTrim;
         }
     }
     if (\is_string($a) && \is_int($b)) {
-        $a = trim($a);
-        if (!is_numeric($a)) {
+        $aTrim = trim($a, " \t\n\r\v\f");
+        if (!is_numeric($aTrim)) {
             return $a <=> (string) $b;
         }
-        if ((int) $a == $a) {
-            return (int) $a <=> $b;
+        if ((int) $aTrim == $aTrim) {
+            return (int) $aTrim <=> $b;
         } else {
-            return (float) $a <=> (float) $b;
+            return (float) $aTrim <=> (float) $b;
         }
     }
 
@@ -971,23 +971,23 @@ function twig_compare($a, $b)
         if (is_nan($a)) {
             return 1;
         }
-        $b = trim($b);
-        if (!is_numeric($b)) {
+        $bTrim = trim($b, " \t\n\r\v\f");
+        if (!is_numeric($bTrim)) {
             return (string) $a <=> $b;
         }
 
-        return $a <=> (float) $b;
+        return $a <=> (float) $bTrim;
     }
     if (\is_string($a) && \is_float($b)) {
         if (is_nan($b)) {
             return 1;
         }
-        $a = trim($a);
-        if (!is_numeric($a)) {
+        $aTrim = trim($a, " \t\n\r\v\f");
+        if (!is_numeric($aTrim)) {
             return $a <=> (string) $b;
         }
 
-        return (float) $a <=> $b;
+        return (float) $aTrim <=> $b;
     }
 
     // fallback to <=>
diff --git a/tests/Extension/CoreTest.php b/tests/Extension/CoreTest.php
index 91cced5b3..aae0f0f52 100644
--- a/tests/Extension/CoreTest.php
+++ b/tests/Extension/CoreTest.php
@@ -320,6 +320,10 @@ class CoreTest extends TestCase
             [-1, 10, 20],
             [-1, '10', 20],
             [-1, 10, '20'],
+
+            [1, 42, ' foo'],
+            [0, 42, "42\f"],
+            [1, 42, "\x00\x34\x32"],
         ];
     }
 }