Hi, The following causes luatex to crash (it is harmless, but still...) echo '\\endinput \\end' | context --pipe gives: *** glibc detected *** luatex: double free or corruption (fasttop): 0x0aef00e8 *** ======= Backtrace: ========= /lib/libc.so.6(+0x725f2)[0xb75f05f2] luatex(luacstring_close+0x7b)[0x810153b] luatex(end_file_reading+0xd8)[0x80b0858] luatex[0x80d88e7] luatex[0x80d75d4] luatex(get_next+0x5d)[0x80d8cfd] luatex(get_x_token+0x15)[0x80acc35] luatex(main_control+0x48)[0x80b4328] luatex(main_body+0x21d)[0x80b1ebd] luatex(main+0x20)[0x8090d40] /lib/libc.so.6(__libc_start_main+0xf3)[0xb7597483] ======= Memory map: ======== 08048000-08464000 r-xp 00000000 08:03 810362 /opt/context-minimals/texmf-linux/bin/luatex 08464000-084d2000 rw-p 0041c000 08:03 810362 /opt/context-minimals/texmf-linux/bin/luatex 084d2000-0878d000 rw-p 00000000 00:00 0 09838000-0af96000 rw-p 00000000 00:00 0 [heap] b5554000-b5ae4000 rw-p 00000000 00:00 0 b5b46000-b5c27000 rw-p 00000000 00:00 0 b5e45000-b6006000 rw-p 00000000 00:00 0 b60a4000-b60c0000 r-xp 00000000 08:03 1006974 /usr/lib/libgcc_s.so.1 b60c0000-b60c1000 rw-p 0001b000 08:03 1006974 /usr/lib/libgcc_s.so.1 b60e7000-b72de000 rw-p 00000000 00:00 0 b72df000-b73b7000 rw-p 00000000 00:00 0 b73b7000-b757c000 r--p 00000000 08:03 1856687 /usr/lib/locale/locale-archive b757c000-b757e000 rw-p 00000000 00:00 0 b757e000-b7719000 r-xp 00000000 08:03 1479914 /lib/libc-2.15.so b7719000-b771b000 r--p 0019b000 08:03 1479914 /lib/libc-2.15.so b771b000-b771c000 rw-p 0019d000 08:03 1479914 /lib/libc-2.15.so b771c000-b771f000 rw-p 00000000 00:00 0 b771f000-b7749000 r-xp 00000000 08:03 1479882 /lib/libm-2.15.so b7749000-b774a000 r--p 00029000 08:03 1479882 /lib/libm-2.15.so b774a000-b774b000 rw-p 0002a000 08:03 1479882 /lib/libm-2.15.so b774b000-b774e000 r-xp 00000000 08:03 1479881 /lib/libdl-2.15.so b774e000-b774f000 r--p 00002000 08:03 1479881 /lib/libdl-2.15.so b774f000-b7750000 rw-p 00003000 08:03 1479881 /lib/libdl-2.15.so b7773000-b7777000 rw-p 00000000 00:00 0 b7777000-b7778000 r-xp 00000000 00:00 0 [vdso] b7778000-b7798000 r-xp 00000000 08:03 1479958 /lib/ld-2.15.so b7798000-b7799000 r--p 0001f000 08:03 1479958 /lib/ld-2.15.so b7799000-b779a000 rw-p 00020000 08:03 1479958 /lib/ld-2.15.so bfeeb000-bff0d000 rw-p 00000000 00:00 0 [stack] Aditya