In LocalVarSig syntax diagram the CustomMod and Constraint elements are in a loop, so this means there can be multiple Constraint elements. If there are more than one Constraint element, what is its semantics? Thanks!
Can a LocalVarSig have multiple constraint attributes?
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From ECMA-335 §II.23.2.9, emphasis added:
So
pinnedis the only possible constraint value, at least in the current version of CIL.So, are multiple instances of
pinnedvalid? It appears so. The assembler (ILasm) accepts multiple instances for a local variable:If I assemble this and then disassemble it (ILdasm), the resulting IL retains the repeated
pinnedkeyword. Peering into the assembly with MdDumper also shows the repeated0x45byte in theStandAloneSigtable.I haven't seen any verification differences with multiple
pinnedconstraints, so I assume they are redundant, and equivalent to just having onepinned.