diff options
Diffstat (limited to 'compat/obstack.h')
| -rw-r--r-- | compat/obstack.h | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/compat/obstack.h b/compat/obstack.h index 6bc24b7644..ced94d0118 100644 --- a/compat/obstack.h +++ b/compat/obstack.h @@ -160,11 +160,15 @@ struct obstack /* control current object in current chunk */ void *tempptr; } temp; /* Temporary for some macros. */ int alignment_mask; /* Mask of alignment for each object. */ - /* These prototypes vary based on `use_extra_arg', and we use - casts to the prototypeless function type in all assignments, - but having prototypes here quiets -Wstrict-prototypes. */ - struct _obstack_chunk *(*chunkfun) (void *, long); - void (*freefun) (void *, struct _obstack_chunk *); + /* These prototypes vary based on `use_extra_arg'. */ + union { + void *(*plain) (long); + struct _obstack_chunk *(*extra) (void *, long); + } chunkfun; + union { + void (*plain) (void *); + void (*extra) (void *, struct _obstack_chunk *); + } freefun; void *extra_arg; /* first arg for chunk alloc/dealloc funcs */ unsigned use_extra_arg:1; /* chunk alloc/dealloc funcs take extra arg */ unsigned maybe_empty_object:1;/* There is a possibility that the current @@ -235,10 +239,10 @@ extern void (*obstack_alloc_failed_handler) (void); (void (*) (void *, void *)) (freefun), (arg)) #define obstack_chunkfun(h, newchunkfun) \ - ((h) -> chunkfun = (struct _obstack_chunk *(*)(void *, long)) (newchunkfun)) + ((h)->chunkfun.extra = (struct _obstack_chunk *(*)(void *, long)) (newchunkfun)) #define obstack_freefun(h, newfreefun) \ - ((h) -> freefun = (void (*)(void *, struct _obstack_chunk *)) (newfreefun)) + ((h)->freefun.extra = (void (*)(void *, struct _obstack_chunk *)) (newfreefun)) #define obstack_1grow_fast(h,achar) (*((h)->next_free)++ = (achar)) |