diff options
Diffstat (limited to 'Objects/frameobject.c')
| -rw-r--r-- | Objects/frameobject.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/Objects/frameobject.c b/Objects/frameobject.c index 0e6d9f8e5d..266cbd2caa 100644 --- a/Objects/frameobject.c +++ b/Objects/frameobject.c @@ -66,6 +66,8 @@ static int frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno) { int new_lineno = 0; /* The new value of f_lineno */ + long l_new_lineno; + int overflow; int new_lasti = 0; /* The new value of f_lasti */ int new_iblock = 0; /* The new value of f_iblock */ unsigned char *code = NULL; /* The bytecode for the frame... */ @@ -88,7 +90,7 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno) unsigned char setup_op = 0; /* (ditto) */ /* f_lineno must be an integer. */ - if (!PyInt_CheckExact(p_new_lineno)) { + if (!PyLong_CheckExact(p_new_lineno)) { PyErr_SetString(PyExc_ValueError, "lineno must be an integer"); return -1; @@ -104,7 +106,19 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno) } /* Fail if the line comes before the start of the code block. */ - new_lineno = (int) PyLong_AsLong(p_new_lineno); + l_new_lineno = PyLong_AsLongAndOverflow(p_new_lineno, &overflow); + if (overflow +#if SIZEOF_LONG > SIZEOF_INT + || l_new_lineno > INT_MAX + || l_new_lineno < INT_MIN +#endif + ) { + PyErr_SetString(PyExc_ValueError, + "lineno out of range"); + return -1; + } + new_lineno = (int)l_new_lineno; + if (new_lineno < f->f_code->co_firstlineno) { PyErr_Format(PyExc_ValueError, "line %d comes before the current code block", |