Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130801 Thunderbird/17.0.8
There are times that the -ftrace and its cousin -ftraceall are useful.
At this time I have used the OC compiler on Windows 32 and 64 bit, AIX
and Sun Solaris. I have found that these options only produce the trace
on a 32 bit Windows uniform.