MonoDevelop.exe assert failure: *** Error in `monodevelop': free(): invalid pointer: 0x000055bf61a2e6b0 ***

[Vaibhav Jain]

If i open the c++ file than monodevelop crashes.

ProblemType: Crash
DistroRelease: Ubuntu 17.04
Package: monodevelop 5.10.0.871-2
Uname: Linux 4.10.0-041000rc1-generic x86_64
ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
AssertionMessage: *** Error in `monodevelop': free(): invalid pointer: 0x000055bf61a2e6b0 ***
CrashCounter: 1
CurrentDesktop: Unity:Unity7
Date: Sat Feb 18 07:34:58 2017
ExecutablePath: /usr/lib/monodevelop/bin/MonoDevelop.exe
InterpreterPath: /usr/bin/mono-sgen
PackageArchitecture: all
ProcCmdline: monodevelop /usr/lib/monodevelop/bin/MonoDevelop.exe /usr/lib/monodevelop/bin/MonoDevelop.exe
ProcEnviron:
 LANG=en_IN
 SHELL=/bin/bash
 LANGUAGE=en_IN:en
 XDG_RUNTIME_DIR=<set>
 PATH=(custom, user)
Signal: 6
SourcePackage: monodevelop
StacktraceTop:
 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
 __GI_abort () at abort.c:89
 __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7f7fba0c33a8 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
 malloc_printerr (ar_ptr=<optimized out>, ptr=<optimized out>, str=0x7f7fba0bff3b "free(): invalid pointer", action=3) at malloc.c:5046
 _int_free (av=<optimized out>, p=<optimized out>, have_lock=<optimized out>) at malloc.c:3902
Title: MonoDevelop.exe assert failure: *** Error in `monodevelop': free(): invalid pointer: 0x000055bf61a2e6b0 ***
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Ave (aveo)]

This is also affecting me, and is not allowing me to create C# projects, both on MonoDevelop and MonoDevelop-Unity.

[Daniel Mulholland (dan-mulholland)]

I think the same bug for me in Ubuntu 17.04. When I go to File > Open before I have even selected a file I get

** Error in `monodevelop': free(): invalid pointer: 0x00007fb3c0011840 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7908b)[0x7fb4157e408b]
/lib/x86_64-linux-gnu/libc.so.6(+0x826fa)[0x7fb4157ed6fa]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x4c)[0x7fb4157f112c]
[0x409ae260]

with a memory map following this backtrace which I have not included.

[dino99 (9d9)]

That version is now dead
http://news.softpedia.com/news/ubuntu-17-04-zesty-zapus-has-reached-end-of-life-upgrade-to-ubuntu-17-10-now-519360.shtml