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From: | Piotr Held |
Subject: | [Octave-bug-tracker] [bug #51993] Seg fault when calling 'clear all' after creating class that contains subfunctions in local functions |
Date: | Mon, 11 Sep 2017 17:04:25 -0400 (EDT) |
User-agent: | Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.78 Safari/537.36 |
URL: <http://savannah.gnu.org/bugs/?51993> Summary: Seg fault when calling 'clear all' after creating class that contains subfunctions in local functions Project: GNU Octave Submitted by: jsoh425 Submitted on: Mon 11 Sep 2017 09:04:24 PM UTC Category: Interpreter Severity: 3 - Normal Priority: 5 - Normal Item Group: Segfault, Bus Error, etc. Status: None Assigned to: None Originator Name: Piotr Held Originator Email: Open/Closed: Open Discussion Lock: Any Release: dev Operating System: Any _______________________________________________________ Details: When creating the following class (I attached the class *.m file also): classdef local_fcn_class methods function obj = local_fcn_class (arg1) local_foo (arg1); end end end function ret = local_foo (arg1) function y = sub_foo (x) y = x + 1; end ret = sub_foo(arg1); end After constructing this class calling 'clear all' or exiting Octave causes heap-use-after-free AddressSanitizer error. This does not seem to be a problem if the subfunction ('sub_foo' in this case) is defined not in a classdef local function but in a separate function file. I also stepped through the code and was able to confirm that the error occurs while clearing 'sub_foo' from symbol_table::clear_functions ( symtab.h:1194 <http://hg.savannah.gnu.org/hgweb/octave/file/c2ef0eddf6bc/libinterp/corefcn/symtab.h#l1194>) when clearing 'sub_foo' from the symbol table. _______________________________________________________ File Attachments: ------------------------------------------------------- Date: Mon 11 Sep 2017 09:04:24 PM UTC Name: local_fcn_class.m Size: 227B By: jsoh425 <http://savannah.gnu.org/bugs/download.php?file_id=41781> _______________________________________________________ Reply to this item at: <http://savannah.gnu.org/bugs/?51993> _______________________________________________ Message sent via/by Savannah http://savannah.gnu.org/
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