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Array with Fully-Bracketed Initializers

Andy Neil

Following on from this discussion:
http://www.8052.com/forum/read.phtml?id=84814


Keil C51 v7.50 rejects the following:

char key_tbl[][] =
{
    {   4,   3,   2,   1 },    // row 0
    {   8,   7,   6,   5 },    // row 1
    {  12,  11,  10,   9 },    // row 2
    {  16,  15,  14,  13 },    // row 3
};
It says:
MAIN.C(27): error C163: 'key_tbl': unknown array size
Since this is a Fully-Bracketed Initializer, shouldn't the compiler be able to deduce the size?

The description of this message in the online help doesn't mention this situation:

"In general, a formal size specifier is not required for external, single, or multi-dimensional arrays. Typically, the compiler calculates the size at initialization time. For external arrays, the size is of no great interest. This error is the result of attempting to use the sizeof operator on an undimensioned array or on a multi-dimensional array with undefined element sizes."

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