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### 7.34 `.desc` symbol`,` abs-expression

This directive sets the descriptor of the symbol (see Symbol Attributes) to the low 16 bits of an absolute expression.

The .desc directive is not available when as is configured for COFF output; it is only for `a.out` or `b.out` object format. For the sake of compatibility, as accepts it, but produces no output, when configured for COFF.