Re: [avr-gcc-list] Bizarre string problem

[Joerg Wunsch]

"Dave Hansen" <address@hidden> wrote:

>    An array of character type may be initialized by a character
> string literal, optionally enclosed in braces. Successive characters
> of the character string literal (including the terminating null
> character if there is room or if the array is of unknown size)
> initialize the elements of the array.

Interesting.

> The way I read this is
> 
>    char t[1] = "Thanks for all the fish.";
> 
> is legal and will initialize the first (and only) element of t to 'T'.

That's the fun about standards. ;-)  The way I read the above is that
this wouldn't be allowed, since the optional clause ``if there is room
in the array'' only applies to the trailing '\0'.

Consequently, GCC at least warns:

% avr-gcc -Wall -S foo.c
foo.c:1: warning: initializer-string for array of chars is too long

whereis it compiles

char t[1] = "T";

without a complaint (to the same assembler code, of cause).

-- 
J"org Wunsch                                           Unix support engineer
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