I built emacs from the "master" branch ofhttps:// github.com/emacs-mirror/emacs. It failed as shown below. vagrant@vagrant-ubuntu-server-trusty-32:~/git-repositories/3rd-party/emacs$ cat /etc/issue Ubuntu 14.04.2 LTS \n \l vagrant@vagrant-ubuntu-server-trusty-32:~/git-repositories/3rd-party/emacs$ uname -a Linux vagrant-ubuntu-server-trusty-32 3.13.0-46-generic #76-Ubuntu SMP Thu Feb 26 18:52:49 UTC 2015 i686 i686 i686 GNU/Linux vagrant@vagrant-ubuntu-server-trusty-32:~/git-repositories/3rd-party/emacs$ git show --stat commit b74db6347cf5cac1ebd4c604fd5691c588fd8e32 Author: Paul Eggert Date: Tue Feb 24 16:34:13 2015 -0800 Backtrace after malloc arena is corrupted Without this change, if the malloc arena is corrupted and then 'backtrace' is called, the backtrace can crash because 'backtrace' calls 'malloc'. For more, please see: https://sourceware.org/ml/libc-alpha/2015-02/msg00678.html * emacs.c (main): Initialize tables used by 'backtrace'. * sysdep.c (emacs_backtrace): Document the newly used part of the API. src/ChangeLog | 10 ++++++++++ src/emacs.c | 2 ++ src/sysdep.c | 12 +++++++++++- 3 files changed, 23 insertions(+), 1 deletion(-) vagrant@vagrant-ubuntu-server-trusty-32:~/git-repositories/3rd-party/emacs$ ./autogen.sh && ./configure --without-x && make Checking whether you have the necessary tools... (Read INSTALL.REPO for more details on building Emacs) Checking for autoconf (need at least version 2.65)... ok Checking for automake (need at least version 1.11)... ok Your system has the required tools. Running 'autoreconf -fi -I m4' ... configure.ac:756: installing 'build-aux/compile' configure.ac:139: installing 'build-aux/config.guess' configure.ac:139: installing 'build-aux/config.sub' configure.ac:136: installing 'build-aux/install-sh' configure.ac:136: installing 'build-aux/missing' lib/Makefile.am: installing 'build-aux/depcomp' You can now run './configure'. checking for xcrun... no checking for GNU Make... make checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... gawk checking whether make supports nested variables... 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(cached) yes checking for nlink_t... yes checking whether localtime_r is declared... yes checking whether localtime_r is compatible with its POSIX signature... yes checking for library containing timer_settime... -lrt checking for timer_settime... yes checking for unsetenv... yes checking for unsetenv() return type... int checking whether unsetenv obeys POSIX... yes checking for variable-length arrays... yes checking whether getdtablesize works... yes Configured for `i686-pc-linux-gnu'. Where should the build process find the source code? . What compiler should emacs be built with? gcc -std=gnu99 -g3 -O2 Should Emacs use the GNU version of malloc? yes (Using Doug Lea's new malloc from the GNU C Library.) Should Emacs use a relocating allocator for buffers? no Should Emacs use mmap(2) for buffer allocation? no What window system should Emacs use? none What toolkit should Emacs use? none Where do we find X Windows header files? NONE Where do we find X Windows libraries? NONE Does Emacs use -lXaw3d? no Does Emacs use -lXpm? no Does Emacs use -ljpeg? no Does Emacs use -ltiff? no Does Emacs use a gif library? no Does Emacs use a png library? no Does Emacs use -lrsvg-2? no Does Emacs use imagemagick? no Does Emacs support sound? yes Does Emacs use -lgpm? yes Does Emacs use -ldbus? yes Does Emacs use -lgconf? no Does Emacs use GSettings? no Does Emacs use a file notification library? yes -lgio (gfile) Does Emacs use access control lists? no Does Emacs use -lselinux? yes Does Emacs use -lgnutls? yes Does Emacs use -lxml2? yes Does Emacs use -lfreetype? no Does Emacs use -lm17n-flt? no Does Emacs use -lotf? no Does Emacs use -lxft? no Does Emacs directly use zlib? yes Does Emacs use toolkit scroll bars? no checking that generated files are newer than configure... done configure: creating ./config.status config.status: creating ./doc/man/emacs.1 config.status: creating Makefile config.status: creating lib/Makefile config.status: creating lib-src/Makefile config.status: creating oldXMenu/Makefile config.status: creating doc/emacs/Makefile config.status: creating doc/misc/Makefile config.status: creating doc/lispintro/Makefile config.status: creating doc/lispref/Makefile config.status: creating src/Makefile config.status: creating lwlib/Makefile config.status: creating lisp/Makefile config.status: creating leim/Makefile config.status: creating nextstep/Makefile config.status: creating nt/Makefile config.status: creating test/automated/Makefile config.status: creating admin/unidata/Makefile config.status: creating admin/grammars/Makefile config.status: creating src/config.h config.status: executing depfiles commands config.status: executing src/epaths.h commands config.status: executing src/.gdbinit commands config.status: executing doc/emacs/emacsver.texi commands config.status: executing etc-refcards-emacsver.tex commands make -C lib all make[1]: Entering directory `/home/vagrant/git-repositories/3rd-party/emacs/lib' GEN alloca.h GEN c++defs.h GEN arg-nonnull.h GEN warn-on-use.h GEN dirent.h GEN fcntl.h GEN inttypes.h GEN signal.h GEN stdalign.h GEN stddef.h GEN stdio.h GEN stdlib.h GEN string.h GEN sys/select.h GEN sys/stat.h GEN sys/time.h GEN sys/types.h GEN time.h GEN unistd.h make all-am make[2]: Entering directory `/home/vagrant/git-repositories/3rd-party/emacs/lib' CC allocator.o CC binary-io.o CC c-ctype.o CC c-strcasecmp.o CC c-strncasecmp.o CC careadlinkat.o CC close-stream.o CC count-one-bits.o CC count-trailing-zeros.o CC md5.o CC sha1.o CC sha256.o CC sha512.o CC dtoastr.o CC dtotimespec.o CC filemode.o CC gettime.o CC pipe2.o CC acl-errno-valid.o CC file-has-acl.o CC qcopy-acl.o CC qset-acl.o CC stat-time.o CC strftime.o CC timespec.o CC timespec-add.o CC timespec-sub.o CC u64.o CC unistd.o CC utimens.o CC openat-die.o CC save-cwd.o CC fcntl.o CC sig2str.o AR libgnu.a make[2]: Leaving directory `/home/vagrant/git-repositories/3rd-party/emacs/lib' make[1]: Leaving directory `/home/vagrant/git-repositories/3rd-party/emacs/lib' make -C lib-src all make[1]: Entering directory `/home/vagrant/git-repositories/3rd-party/emacs/lib-src' CC regex.o CCLD etags CCLD ctags CCLD emacsclient CCLD ebrowse CCLD profile CC pop.o CCLD movemail CCLD hexl CCLD update-game-score CCLD make-docfile make[1]: Leaving directory `/home/vagrant/git-repositories/3rd-party/emacs/lib-src' make -C src VCSWITNESS='$(srcdir)/../.git/logs/HEAD' all make[1]: Entering directory `/home/vagrant/git-repositories/3rd-party/emacs/src' GEN globals.h CC vm-limit.o CC dispnew.o CC frame.o CC scroll.o CC xdisp.o CC menu.o CC window.o CC charset.o CC coding.o CC category.o CC ccl.o CC character.o CC chartab.o CC bidi.o CC cm.o CC term.o CC terminal.o CC xfaces.o CC dbusbind.o CC emacs.o CC keyboard.o CC macros.o CC keymap.o CC sysdep.o CC buffer.o CC filelock.o CC insdel.o CC marker.o CC minibuf.o CC fileio.o CC dired.o CC cmds.o CC casetab.o CC casefiddle.o CC indent.o CC search.o CC regex.o CC undo.o CC alloc.o CC data.o GEN buildobj.h CC doc.o CC editfns.o CC callint.o CC eval.o CC floatfns.o CC fns.o CC font.o CC print.o CC lread.o CC syntax.o CC unexelf.o CC bytecode.o CC process.o CC gnutls.o CC callproc.o CC region-cache.o CC sound.o CC atimer.o CC doprnt.o CC intervals.o CC textprop.o CC composite.o CC xml.o CC gfilenotify.o CC profiler.o CC decompress.o CC xgselect.o CC terminfo.o CC lastfile.o CCLD temacs /bin/mkdir -p ../etc : paxctl -r temacs : setfattr -n user.pax.flags -v er temacs make -C ../lisp update-subdirs make[2]: Entering directory `/home/vagrant/git-repositories/3rd-party/emacs/lisp' for file in `find . -type d -print`; do case $file in .*/cedet* | .*/leim* ) ;; *) wins="$wins${wins:+ }$file" ;; esac; done; \ for file in $wins; do \ ./../build-aux/update-subdirs $file; \ done; make[2]: Leaving directory `/home/vagrant/git-repositories/3rd-party/emacs/lisp' ./temacs --batch --load loadup bootstrap make[1]: *** [bootstrap-emacs] Segmentation fault (core dumped) make[1]: Leaving directory `/home/vagrant/git-repositories/3rd-party/emacs/src' make: *** [src] Error 2 vagrant@vagrant-ubuntu-server-trusty-32:~/git-repositories/3rd-party/emacs/src$ gdb temacs GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i686-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from temacs...done. warning: File "/home/vagrant/git-repositories/3rd-party/emacs/src/.gdbinit" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load". To enable execution of this file add add-auto-load-safe-path /home/vagrant/git-repositories/3rd-party/emacs/src/.gdbinit line to your configuration file "/home/vagrant/.gdbinit". To completely disable this security protection add set auto-load safe-path / line to your configuration file "/home/vagrant/.gdbinit". For more information about this security protection see the "Auto-loading safe path" section in the GDB manual. E.g., run from the shell: info "(gdb)Auto-loading safe path" (gdb) run --batch --load loadup bootstrap Starting program: /home/vagrant/git-repositories/3rd-party/emacs/src/temacs --batch --load loadup bootstrap [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1". process 8435 is executing new program: /home/vagrant/git-repositories/3rd-party/emacs/src/temacs [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1". Program received signal SIGSEGV, Segmentation fault. __GI___backtrace (array=array@entry=0xbfffedcc, size=size@entry=0) at ../sysdeps/i386/backtrace.c:141 141 ../sysdeps/i386/backtrace.c: No such file or directory. (gdb) bt #0 __GI___backtrace (array=array@entry=0xbfffedcc, size=size@entry=0) at ../sysdeps/i386/backtrace.c:141 #1 0x080ed543 in emacs_backtrace (backtrace_limit=backtrace_limit@entry=-1) at sysdep.c:2177 #2 0x0804f744 in main (argc=, argv=0xbffff6d4) at emacs.c:887 (gdb)