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cannot allocate an array of constant size 0
An array is allocated or declared with size zero. The constant expression for the array size must be an integer greater than zero. An array declaration with a zero subscript is legal only for a class, structure, or union member and only with Microsoft extensions (/Ze).
The following sample generates C2466:
// C2466.cpp
// compile with: /c
int arr1[0]; // C2466
int arr2[1]; // OK