I have some auto-generated C code that contains declarations like:
int x[0];
int y[] = {};
With Microsoft compilers, both lines are illegal. The first produces the
errors:
error C2466: cannot allocate an array of constant size 0
error C2133: 'x' : unknown size
and the second produces the error:
error C2059: syntax error : '}'
What does gcc-3.x.x do with declarations like that (and why) ?
Is there a case for allowing such declarations to be made, or does Microsoft
do the right thing by making them errors ?
I wrote the following test script:
-------------------------
#include <stdio.h>
int main(void) {
int x[0];
int y[] = {};
printf("%d\n", y[0]);
printf("%d\n", x[0]);
printf("ok\n");
return 0;
}
-------------------------
And built it (using the MinGW port of gcc-3.4.5) with :
gcc -o try.exe -Wall try.c
No warnings were issued, and try.exe happily outputs:
1964975285
1965243500
ok
Cheers,
Rob
