[Cython] Add support for the offsetof() C macro
Hi, offsetof() is not supported by current Cython, and I have not found any workaround (except hardcoding offsets for a specific architecture and compiler, but this is obviously wrong). offsetof(struct_type, member) is a C macro that expands to the offset of the member in the struct, in bytes. Could you add support for it, perhaps like sizeof as a special case in the parser? And many thanks for the whole project! ☺ -- Emmanuel Gil Peyrot XMPP: OpenPGP: 24B1D609 pgpNAHf9fQpmU.pgp Description: PGP signature ___ cython-devel mailing list cython-devel@python.org http://mail.python.org/mailman/listinfo/cython-devel
Re: [Cython] Add support for the offsetof() C macro
Hi, offsetof() is not supported by current Cython, and I have not found any workaround (except hardcoding offsets for a specific architecture and compiler, but this is obviously wrong). offsetof() would certainly be very useful, but in the meantime offsetof(Struct, field) can be replaced with: &(NULL).field It's not ANSI C, but is portable enough. Another option (for extern or public structs only) is to abuse renaming: enum: Struct_offsetof_field1 "offsetof(Struct, field1)" This way a symbolic name can be given to any expression to be literally pasted into the generated code. Best regards, Nikita Nemkin ___ cython-devel mailing list cython-devel@python.org http://mail.python.org/mailman/listinfo/cython-devel
