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There are some obscure situations where the RHS of a rule can contain a tick which is not mentioned anywhere else in the program. If this happens you end up with an obscure linker error. The solution is quite simple, traverse the RHS of rules to also look for ticks. It turned out to be easier to implement if the traversal was moved into CoreTidy rather than at the start of code generation because there we still had easy access to the rules. ./StreamD.o(.text+0x1b9f2): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc' ./MArray.o(.text+0xbe83): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc' Main.o(.text+0x6fdb): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc'
There are some obscure situations where the RHS of a rule can contain a tick which is not mentioned anywhere else in the program. If this happens you end up with an obscure linker error. The solution is quite simple, traverse the RHS of rules to also look for ticks. It turned out to be easier to implement if the traversal was moved into CoreTidy rather than at the start of code generation because there we still had easy access to the rules. ./StreamD.o(.text+0x1b9f2): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc' ./MArray.o(.text+0xbe83): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc' Main.o(.text+0x6fdb): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc'
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