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[I'm away from a C compiler and can't test]:

What happen if you do

void bar(int fooArray[static 0]) {} ?

Is NULL allowed?

    test.c:3:30: warning: 'static' has no effect on zero-length arrays [-Warray-bounds]

According to section of C99: “If the expression is a constant expression, it shall have a value greater than zero.”

The “expression” here refers to an expression in between [] in an array declaration; so the declaration of size 0 is a constraint violation and requires a diagnostic. You can get gcc and clang to issue a relevant diagnostic with “-std=c99 -pedantic”.

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