Re: [avr-gcc-list] How to suppres trigraph warning messages?

[Bob Paddock]

On Mon, 15 Aug 2005 12:48:51 -0700, Dave Hylands <address@hidden>  
wrote:


> If you don't find a compiler option, you could reformat your source code:
>
> char date[] = "??" "/??" "/??";
>
> which will compile to the same thing but has no tri-graphs.

Digging into this I found that according to the GCC documentation
the trigraph warning is included as part of -Wall.

I removed -Wall and still get the tri-graph warning. :-(
Seems compiler has not read the docs.

"-Wall: Requests -Wcomment, -Wtrigraphs, and -Wwhite-space (but not  
-Wtraditional or -Wundef)."

Also found that '-Wwhite-space' gives "Unknown Option" when I
tried to reconstruct -Wall without -Wtrigraphs.

I went with Alan's hard on the eyes version (was easier to do with  
search&replace), all compiles cleanly now:

 char date[] = "?\?/?\?/?\?";

Makes me wonder that my first escape attempt would really generate?
char date[] = "\??/\??/\??/";

 Thank you.