diff options
| author | Ken Raeburn <[email protected]> | 2000-04-05 18:47:29 +0000 |
|---|---|---|
| committer | Ken Raeburn <[email protected]> | 2000-04-05 18:47:29 +0000 |
| commit | 74e49b38a8438c25b5f96cbc16be8001c706a484 (patch) | |
| tree | 285254b654bf079cc637418083a2defbffbdc198 /src/lisp.h | |
| parent | 7c752c8099915f10ec6e99d60ea20196111a94a1 (diff) | |
* lisp.h (make_number) [!NO_UNION_TYPE && __GNUC__ >= 2 && __OPTIMIZE__]:
Provide a GNU C macro version that handles lisp-object unions.
(XSET) [!NO_UNION_TYPE]: Set the value field first, then the type field, to
better cope with ENABLE_CHECKING and calls that modify a Lisp_Object using its
old value.
Diffstat (limited to 'src/lisp.h')
| -rw-r--r-- | src/lisp.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/lisp.h b/src/lisp.h index 52a9f9b78b..e6b91f6db6 100644 --- a/src/lisp.h +++ b/src/lisp.h @@ -424,9 +424,14 @@ extern int pure_size; #define XPNTR(a) ((a).u.val) #define XSET(var, vartype, ptr) \ - (((var).s.type = ((char) (vartype))), ((var).s.val = ((int) (ptr)))) + (((var).s.val = ((int) (ptr))), ((var).s.type = ((char) (vartype)))) +#if __GNUC__ >= 2 && defined (__OPTIMIZE__) +#define make_number(N) \ + (__extension__ ({ Lisp_Object _l; _l.s.val = (N); _l.s.type = Lisp_Int; _l; })) +#else extern Lisp_Object make_number (); +#endif /* During garbage collection, XGCTYPE must be used for extracting types so that the mark bit is ignored. XMARKBIT access the markbit. |