Minor Description
As reported in the mailing lists, when guacamole-server is built against GCC 7, an additional warning is flagged within typescript.c, resulting in the build failing:
...
Making all in src/terminal
make[2]: Entering directory '/home/mjumper/apache/guacamole/guacamole-server/src/terminal'
CC libguac_terminal_la-buffer.lo
CC libguac_terminal_la-char_mappings.lo
CC libguac_terminal_la-common.lo
CC libguac_terminal_la-display.lo
CC libguac_terminal_la-named-colors.lo
CC libguac_terminal_la-palette.lo
CC libguac_terminal_la-scrollbar.lo
CC libguac_terminal_la-terminal.lo
CC libguac_terminal_la-terminal_handlers.lo
CC libguac_terminal_la-typescript.lo
typescript.c: In function ‘guac_terminal_typescript_alloc’:
typescript.c:133:46: error: ‘%s’ directive writing 6 bytes into a region of size between 0 and 2047 [-Werror=format-overflow=]
sprintf(typescript->timing_filename, "%s.%s", typescript->data_filename,
^~
typescript.c:133:5: note: ‘sprintf’ output between 8 and 2055 bytes into a destination of size 2048
sprintf(typescript->timing_filename, "%s.%s", typescript->data_filename,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GUAC_TERMINAL_TYPESCRIPT_TIMING_SUFFIX);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [Makefile:572: libguac_terminal_la-typescript.lo] Error 1
make[2]: Leaving directory '/home/mjumper/apache/guacamole/guacamole-server/src/terminal'
make[1]: *** [Makefile:517: all-recursive] Error 1
make[1]: Leaving directory '/home/mjumper/apache/guacamole/guacamole-server'
make: *** [Makefile:439: all] Error 2
