Check all silenced errors for strict_types changes to error level

Fixes kint-php#412

src/Parser/FsPathPlugin.php

@@ -30,6 +30,7 @@
 use Kint\Zval\Representation\SplFileInfoRepresentation;
 use Kint\Zval\Value;
 use SplFileInfo;
+use TypeError;
 
 class FsPathPlugin extends AbstractPlugin
 {
@@ -59,8 +60,13 @@ public function parse(&$var, Value &$o, int $trigger): void
             return;
         }
 
-        if (!@\file_exists($var)) {
-            return;
+        try {
+            if (!@\file_exists($var)) {
+                return;
+            }
+        } catch (TypeError $e) {// @codeCoverageIgnore
+            // Only possible in PHP 7
+            return; // @codeCoverageIgnore
         }
 
         if (\in_array($var, self::$blacklist, true)) {

src/Zval/BlobValue.php

@@ -182,7 +182,9 @@ public static function detectEncoding(string $string)
         if (\function_exists('iconv')) {
             foreach (self::$legacy_encodings as $encoding) {
                 // Iconv detection works by triggering
-                // "Detected an illegal character in input string" warnings
+                // "Detected an illegal character in input string" notices
+                // This notice does not become a TypeError with strict_types
+                // so we don't have to wrap this in a try catch
                 if (@\iconv($encoding, $encoding, $string) === $string) {
                     return $encoding;
                 }

tests/Parser/FsPathPluginTest.php

@@ -108,6 +108,10 @@ public function fsPathProvider()
                 '.',
                 false,
             ],
+            'nullinstring' => [
+                "/home/kint/invalid\0path/file.php",
+                false,
+            ],
         ];
     }
 

tests/Zval/BlobValueTest.php

@@ -156,6 +156,9 @@ public function testDetectLegacyEncoding()
             'UTF-8'
         );
         $this->assertSame('Windows-1251', BlobValue::detectEncoding($string));
+
+        $string = $string."\0".$string;
+        $this->assertFalse(BlobValue::detectEncoding($string));
     }
 
     /**