Package: librrd4 Version: 1.4.8-1.2+deb8u1 Last night’s security update seems to be breaking the rrdtool command we are using:
$ rrdtool graph /dev/null --start -1h --step=300 --end now DEF:in=totalall.rrd:ds0:AVERAGE 'CDEF:avg_in=in,8,*' VDEF:avg_int=avg_in,AVERAGE PRINT:avg_int:%.lf ERROR: cannot compile regular expression: Error while compiling regular expression ^(?:[^%]+|%%)*%[+- 0#]?[0-9]*([.][0-9]+)?l[eEfF](?:[^%]+|%%)*%s(?:[^%]+|%%)*$ at char 18: ran ge out of order in character class (^(?:[^%]+|%%)*%[+- 0#]?[0-9]*([.][0-9]+)?l[eEfF](?:[^%]+|%%)*%s(?:[^%]+|%%)*$) Reverting to the previous version 1.4.8-1.2 makes the command working as expected. I am using Debian jessie 8.11 with 3.16.0-8-amd64 kernel. Regards, Lukasz