Fixed bug #75511 (fread not free unused buffer)

9 years ago · 1c1df0d937
2 changed files with 7 additions and 0 deletions
--- a/3
+++ b/3
@ -6,6 +6,9 @@ PHP                                                                        NEWS
  . Fixed bug #75384 (PHP seems incompatible with OneDrive files on demand).
    (Anatol)

+- Standard:
+  . Fixed bug #75511 (fread not free unused buffer). (Laruence)
+
 23 Nov 2017, PHP 7.1.12

 - Core:
--- a/ext/standard/file.c
+++ b/ext/standard/file.c
@ -1771,6 +1771,10 @@ PHPAPI PHP_FUNCTION(fread)

 	/* needed because recv/read/gzread doesnt put a null at the end*/
 	Z_STRVAL_P(return_value)[Z_STRLEN_P(return_value)] = 0;
+
+	if (len > Z_STRLEN_P(return_value) * 2) {
+		Z_STR_P(return_value) = zend_string_truncate(Z_STR_P(return_value), Z_STRLEN_P(return_value), 0);
+	}
 }
 /* }}} */