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whitequark
86f2804dc3
Before this commit, zero width sigspecs were dumped as "" (empty string). Unfortunately, 1364-2005 5.2.3.3 indicates that an empty string is equivalent to "\0", and is 8 bits wide, so that's wrong. After this commit, a replication operation with a count of zero is used instead, which is explicitly permitted per 1364-2005 5.1.14, and is defined to have size zero. (Its operand has to have a non-zero size for it to be legal, though.) PR #1203 has addressed this issue before, but in an incomplete way.