No method definition: semanticdb-add-reference, (nil (\"stdio.h\" include (:system-flag t) (unlink-copy-hook (semantic--tag-unlink-copy-secondary-overlays) link-hook (semantic--tag-link-secondary-overlays) secondary-overlays (# #) unlink-hook (semantic--tag-unlink-secondary-overlays) dependency-file \"d:/MinGW/include/stdio.h\") #))"
I use mingw in windows 7 system, c.c is the file name, and there are two sentence in init.el which are relevant to the problem:
(semantic-add-system-include "D:/MinGW/include" 'c-mode)
(setq semantic-c-dependency-system-include-path "D:/MinGW/include")
"M-x customize" then search "Global Semanticdb Minor Mode" then toggle on it