AIX C:constant expr in array decl breaks cc

[Johann Schweigl]

Is there *formally* anything wrong with the following global declaration:

void (*foo[2][0 + 1 + 1 + 1])() = {
	{ fun1, fun2, fun3 },
	{ fun4, fun5, fun6 }
};

AIX C will not compile this but issue an error saying a '}' is missing on
both initialization lines.
The compiler gets confused by the '[0 + 1 + 1 + 1]'. Replace it by [3]
and everything works fine. The addition chain was generated by the 
the preprocessor.
Should it be like this, or is this an error?
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