Oops -- '(' is also a legal start character of a new format...

diff --git a/Python/getargs.c b/Python/getargs.c
index 7931b33cf96924d2ecb8ed38e68e5600e35ec7a4..296a3aa2c7ccad815b05ab95f933d4897f22d2f3 100644 (file)
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -258,6 +258,7 @@ vgetargs1(args, format, p_va, compat)
        }
 
        if (*format != '\0' && !isalpha(*format) &&
+           *format != '(' &&
            *format != '|' && *format != ':' && *format != ';') {
                PyErr_Format(PyExc_SystemError,
                             "bad format string: %s", formatsave);