ccfilter: buffer overflow in ccfilter.c with crafted compiler output

ccfilter: buffer overflow in ccfilter.c with crafted compiler output

Problem:  ccfilter: can overflow fixed-size buffers (FileName, BasePath,
          Reason) when parsing crafted compiler output, because the
          sscanf() calls read "%[" fields without a width limit (DDugs)
Solution: Give every sscanf() "%[" conversion a width limit derived from
          the buffer size (Hirohito Higashi).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: Hirohito Higashi <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>