You're right --- the string can be GC'ed at any time. There are a few ways to solve the problem:
* Allocate `giarg' with `(malloc 'nonatomic ...)` and never install a non-pointer value into it. * Allocate the string's memory with `(malloc 'atomic-interior ...)` and arrange for that memory to be referenced from some GC-visible place for as long as it can be referenced by `giarg`. * Allocate the string's memory with `(malloc 'raw ...)` and explicitly `free` it when `giarg` is no longer used. At Sun, 01 Sep 2013 17:38:26 +0400, Roman Klochkov wrote: > (define _giarg (_union _bool _int8 _uint8 _int16 _uint16 > _int32 _uint32 _int64 _uint64 > _float _double _long _ulong _pointer _string)) > > (define giarg (malloc _giarg)) (ptr-set! giarg _string "Test string") > > --- > > It works. But I'm afraid, that string maybe allocated temporary and will be > GC'ed at any time. Or _union keep _string pointer inside? ____________________ Racket Users list: http://lists.racket-lang.org/users
