Fixed bug #22414 and added a test case for it.

ext/standard/exec.c

@@ -213,7 +213,7 @@ int php_Exec(int type, char *cmd, pval *array, pval *return_value TSRMLS_DC)
 	} else {
 		size_t b;
 
-		while ((b = fread(buf, buflen, 1, fp)) > 0) {
+		while((b = php_stream_read(stream, buf, EXEC_INPUT_BUF)) > 0) {
 			if (output) {
 				PHPWRITE(buf, b);
 			}

ext/standard/tests/file/bug22414.phpt

@@ -0,0 +1,37 @@
+--TEST--
+Bug #22414: passthru() does not read data correctly
+--SKIPIF--
+<?php
+	if (empty(@shell_exec("which cat")) {
+		dir('skip cat binary needed for this test is not avaliable');
+	}
+?>
+--POST--
+--GET--
+--FILE--
+<?php
+	$php = getenv('TEST_PHP_EXECUTABLE');
+	$pwd = realpath(dirname(__FILE__));
+
+	/* Regular Data Test */
+	passthru($php . ' -r " echo \"HELLO\"; "');
+
+	echo "\n";
+
+	/* Binary Data Test */
+	@unlink($pwd . '/passthru_test');
+
+	$cmd = $php . ' -r \' passthru("cat ' . $php . '"); \' > ' . $pwd . '/passthru_test';
+	exec($cmd);
+
+	if (md5_file($php) == md5_file($pwd . '/passthru_test')) {
+		echo "Works\n";
+	} else {
+		echo "Does not work\n";
+	}
+
+	@unlink($pwd . '/passthru_test');
+?>
+--EXPECT--
+HELLO
+Works