Match strpos() behavior with mbstring.func_overload

mb_strpos() specifically emulates strpos() behavior when function
overloading is enabled. However, the condition was not changed
when strpos() behavior changed in PHP 7.

diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
index 1e3649e2c51eea192ec66bfea23c77c1b9a7d1a2..0fb57b0165b9b22e96a159c9574868dc3343ca5f 100644 (file)
--- a/ext/mbstring/mbstring.c
+++ b/ext/mbstring/mbstring.c
@@ -2819,7 +2819,7 @@ PHP_FUNCTION(mb_substr)
        }
 
        if (((MBSTRG(func_overload) & MB_OVERLOAD_STRING) == MB_OVERLOAD_STRING)
-               && (real_from >= mbfl_strlen(&string))) {
+               && (real_from > mbfl_strlen(&string))) {
                RETURN_FALSE;
        }