To const or not to const...

[Jan-Benedict Glaw]

Hi!

After playing a bit with macros, I came to some construct I don't fully
understand (or gcc does something bad with it. Here's my testcase:

int a = "hello"[2]; /* #1 */
int main() {
	int b = "again_hello"[5]; /* #2 */
	return 0;
}


Assignment #2 is okay from GCC's eyes, but #1 isn't:

t2.c:2: initializer element is not constant

Sure, what I try is "uncommon" (to the best), but I think that
'"hello"[2]' is a constant value which could be examined. For the
curious, gcc accepts this construct for the second assignment...

The behaviour is the same with gcc-2.95 and gcc-3.0.

MfG, JBG

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