commit 801d955f04d46994ac5bc7270fea86a7703c5192
author Serhiy Storchaka <storchaka@gmail.com> Sun Feb 10 17:42:01 2013 +0200
committer Serhiy Storchaka <storchaka@gmail.com> Sun Feb 10 17:42:01 2013 +0200
tree c63cdc08b7a4b1fde457b74143855d2a24fa2da5
parent 6427358501ac5b5a33b1c0543b46f6d378cea7e3
parent 5e61f14c6dd29982da9364696bc864604b143a66

Issue #12983: Bytes literals with invalid \x escape now raise a SyntaxError
and a full traceback including line number.

Objects/bytesobject.c

diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index 5e17107..47898fe 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -465,8 +465,9 @@
                 break;
             }
             if (!errors || strcmp(errors, "strict") == 0) {
-                PyErr_SetString(PyExc_ValueError,
-                                "invalid \\x escape");
+                PyErr_Format(PyExc_ValueError,
+                             "invalid \\x escape at position %d",
+                             s - 2 - (end - len));
                 goto failed;
             }
             if (strcmp(errors, "replace") == 0) {