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
Thanks for looking into this.
I am building on RHEL 6.8.