#include<string.h> or #include <cstring> but when use memset with error "use of undeclared identifier memset"

[itongggg]

#include <cstring> double a[6]; memset(a, 0, 6); however, i cant call function memset, with error " use of undeclared identifier memset"

[itongggg]

[itongggg]

this is my .ccls

[madscientist]

Well, the first thing is that memset() takes three arguments but you are only passing two. That does seem like an odd error for libclang to report for that mistake.

[itongggg]

my bad ,because i used to use bzreo() while even takes three arguments it doesnt change

[itongggg]

[itongggg]

i tried this it works but i dont konw why if i need set this as standard .ccls for my other .cpp files

Well, the first thing is that memset() takes three arguments but you are only passing two. That does seem like an odd error for libclang to report for that mistake.

[madscientist]

I don't know either but it sounds like something is weird with your build / install of ccls or gcc, or your OS system files. ccls is built against the libclang library so it will look for system header files wherever libclang would look for them.

Unfortunately I try to avoid Apple products so I can't really help solve issues on MacOS. I suggest you ask the Homebrew folks, where you got this build of ccls and gcc (I assume).