Hello Alan, I just updated to the latest master today and tried building emacs but it fails with below: make[3]: Leaving directory '/home/kmodi/downloads/git/emacs/lisp' make -C ../lisp autoloads EMACS="../src/bootstrap-emacs" make[3]: Entering directory '/home/kmodi/downloads/git/emacs/lisp' ELC international/titdic-cnv.elc make -C ../leim all EMACS="../src/bootstrap-emacs" make[4]: Entering directory '/home/kmodi/downloads/git/emacs/leim' GEN ../lisp/leim/quail/CCDOSPY.el Converting /home/kmodi/downloads/git/emacs/leim/CXTERM-DIC/CCDOSPY.tit to quail-package... Decoding with coding system euc-china... marker.c:337: Emacs fatal error: assertion failed: bytepos >= BUF_Z_BYTE (b) || CHAR_HEAD_P (BUF_FETCH_BYTE (b, bytepos)) Fatal error 6: Aborted Backtrace: ../src/bootstrap-emacs[0x55619b] ../src/bootstrap-emacs[0x533f2c] ../src/bootstrap-emacs[0x5a1a74] ../src/bootstrap-emacs[0x56d402] ../src/bootstrap-emacs[0x630ad5] ../src/bootstrap-emacs[0x6350de] ../src/bootstrap-emacs[0x55b15e] ../src/bootstrap-emacs[0x5d039e] ../src/bootstrap-emacs[0x5ce748] ../src/bootstrap-emacs[0x60fb07] ../src/bootstrap-emacs[0x5d19a4] ../src/bootstrap-emacs[0x5ce8a1] ../src/bootstrap-emacs[0x60fb07] .. ../src/bootstrap-emacs[0x53bc05] ../src/bootstrap-emacs[0x53bf67] ../src/bootstrap-emacs[0x534e5a] /lib64/libc.so.6(__libc_start_main+0xfd)[0x32f4c1ed1d] ../src/bootstrap-emacs[0x41c159] /bin/sh: line 1: 6678 Aborted (core dumped) EMACSLOADPATH= '../src/bootstrap-emacs' -batch --no-site-file --no-site-lisp -l titdic-cnv -f batch-titdic-convert -dir ./../lisp/leim/quail CXTERM-DIC/CCDOSPY.tit make[4]: *** [Makefile:107: ../lisp/leim/quail/CCDOSPY.el] Error 134 make[4]: Leaving directory '/home/kmodi/downloads/git/emacs/leim' make[3]: *** [Makefile:358: leim] Error 2 make[3]: Leaving directory '/home/kmodi/downloads/git/emacs/lisp' make[2]: *** [Makefile:787: ../lisp/loaddefs.el] Error 2 make[2]: Leaving directory '/home/kmodi/downloads/git/emacs/src' make[1]: *** [Makefile:423: src] Error 2 make[1]: Leaving directory '/home/kmodi/downloads/git/emacs' make: *** [Makefile:1118: bootstrap] Error 2 Looking for recent changes in marker.c, I found https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=954c9c5bc344cdd6b201c2260b306ec0999aff24 and so emailing you. Thanks for looking into this. I am building on RHEL 6.8. -- Kaushal Modi