I run cpplint on some c files and get test.c:4: Add #include <cstdio> for printf [build/include_what_you_use] [4]. This error should not be posted as <cstdio> is c++ lib and I already put #include <stdio.h> in the file.
I find Skip C++-specific warnings for C code but adding // LINT_C_FILE doesn't work :(