http://digitalmars.com/d/2.0/iasm.html
The AsmInstruction rule references IntegerExpression, which is unspecified.
AsmInstruction:
Identifier : AsmInstruction
align IntegerExpression
The following would probably fix that
IntegerExpression:
Expression
when combined with the existing text stating that the expression must eval to an integer.
Note, the text is unclear if this must be resolvable at compile-time or not.
Comment #1 by leandro.lucarella — 2009-12-14T06:27:49Z