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To: gdb-patches@sourceware.org
Cc: Sebastien Bacher <seb128@ubuntu.com>,
	Julian Taylor <jtaylor.debian@googlemail.com>
From: Matthias Klose <doko@ubuntu.com>
Subject: [patch] fix OverflowError in backtraces with 32bit kernels
Message-ID: <56C8A021.1000800@ubuntu.com>
Date: Sat, 20 Feb 2016 18:19:29 +0100
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This was reported at
https://bugs.launchpad.net/ubuntu/+source/gdb/+bug/1513922

That's using i386, using "backtrace" gives those errors

"Traceback (most recent call last):
   File "/usr/share/gdb/python/gdb/FrameDecorator.py", line 97, in function
     if not isinstance(self._base, gdb.Frame):
SystemError: <built-in function isinstance> returned a result with an error set

#1 0xffffffff in OverflowError: Python int too large to convert to C long"

and a patch was suggested by Julian Taylor, which applies to the trunk as well.

Matthias

--- gdb-7.10.orig/gdb/python/py-framefilter.c
+++ gdb-7.10/gdb/python/py-framefilter.c
@@ -1111,7 +1111,7 @@ py_print_frame (PyObject *filter, int fl

           if (paddr != Py_None)
             {
-             address = PyLong_AsLong (paddr);
+             address = PyLong_AsUnsignedLongLong (paddr);
               has_addr = 1;
             }
           Py_DECREF (paddr);