How to disable warning: null character(s) preserved in literal?

Basically I want to ignore warnings about null-chars in literals.

GCC says that this warning is enabled by default.

I can't find an appropriate -Wno- option for this warning.

You get such warnings in code like this

const char input[] = "abc^@123";

where ^@ denotes the ASCII 0 character (you can enter it with vim via Ctrlv0 - and verify it via ga in command mode while the cursor is placed over the character).

Solution

It's happening in the lexer, and it doesn't look like you can disable the check. :-( Here's the code snippet from libcpp/lex.c:

if (saw_NUL && !pfile->state.skipping)
  cpp_error (pfile, CPP_DL_WARNING,
         "null character(s) preserved in literal");

As you can see, there's no check of any options before emitting the warning.