Add PyErr_WarnEx() so C code can pass the stacklevel to warnings.warn().

This provides the proper warning for struct.pack().
PyErr_Warn() is now deprecated in favor of PyErr_WarnEx().
As mentioned by Tim Peters on python-dev.

1 files changed, 5 insertions, 1 deletions

diff --git a/Include/pyerrors.h b/Include/pyerrors.h
index 6fa6ed7..ae1d990 100644
--- a/Include/pyerrors.h
+++ b/Include/pyerrors.h
@@ -225,10 +225,14 @@ PyAPI_FUNC(PyObject *) PyErr_NewException(char *name, PyObject *base,
 PyAPI_FUNC(void) PyErr_WriteUnraisable(PyObject *);
 
 /* Issue a warning or exception */
-PyAPI_FUNC(int) PyErr_Warn(PyObject *, char *);
+PyAPI_FUNC(int) PyErr_WarnEx(PyObject *category, const char *msg,
+			     Py_ssize_t stack_level);
 PyAPI_FUNC(int) PyErr_WarnExplicit(PyObject *, const char *,
 				   const char *, int, 
 				   const char *, PyObject *);
+/* PyErr_Warn is only for backwards compatability and will be removed.
+   Use PyErr_WarnEx instead. */
+#define PyErr_Warn(category, msg) PyErr_WarnEx(category, msg, 1)
 
 /* In sigcheck.c or signalmodule.c */
 PyAPI_FUNC(int) PyErr_CheckSignals(void);