On Tue, 22 Jun 2010, Basile Starynkevitch wrote: > Hello, > > What are exactly GCC code types, defined in gcc/coretypes.h?
The main purpose of putting types in coretypes.h is to separate interface from implementation. See the comments in that header. /* Provide forward declarations of core types which are referred to by most of the compiler. This allows header files to use these types (e.g. in function prototypes) without concern for whether the full definitions are visible. Some other declarations that need to be universally visible are here, too. > However, I don't understand why gimple_seq_node is a core type. It seems > rarely used (outside of gimple*.[ch] files), and I would imagine it > could be kept in gimple.h. If a type in coretypes.h is not in fact needed by any source files that do not also need to know about the fields of that type, then it may be appropriate to move it out of coretypes.h. If there is code using a header to get a declaration of a type, but not needing the fields of that type, it may be appropriate to move it into coretypes.h. -- Joseph S. Myers jos...@codesourcery.com
