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vm_method_cfunc_is: get rid of ANYARGS

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ANYARGS-ed function prototypes are basically prohibited in C23.
Use __attribute__((__transparent_union__)) instead.
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卜部昌平 2022-09-14 14:35:47 +09:00
parent 8a577cbc63
commit 4e64edb6cd
Notes: git 2022-09-21 11:44:34 +09:00 
Merged: https://github.com/ruby/ruby/pull/6358
1 changed files with 31 additions and 2 deletions
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33
vm_insnhelper.c
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@ -1980,8 +1980,33 @@ vm_search_method(VALUE cd_owner, struct rb_call_data *cd, VALUE recv)
return vm_search_method_fastpath(cd_owner, cd, klass);
}
#if __has_attribute(transparent_union)
typedef union {
VALUE (*anyargs)(ANYARGS);
VALUE (*f00)(VALUE);
VALUE (*f01)(VALUE, VALUE);
VALUE (*f02)(VALUE, VALUE, VALUE);
VALUE (*f03)(VALUE, VALUE, VALUE, VALUE);
VALUE (*f04)(VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*f05)(VALUE, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*f06)(VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*f07)(VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*f08)(VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*f09)(VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*f10)(VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*f11)(VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*f12)(VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*f13)(VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*f14)(VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*f15)(VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE (*fm1)(int, union { VALUE *x; const VALUE *y; } __attribute__((__transparent_union__)), VALUE);
} __attribute__((__transparent_union__)) cfunc_type;
#else
typedef VALUE (*cfunc_type)(ANYARGS);
#endif
static inline int
check_cfunc(const rb_callable_method_entry_t *me, VALUE (*func)(ANYARGS))
check_cfunc(const rb_callable_method_entry_t *me, cfunc_type func)
{
if (! me) {
return false;
@ -1994,13 +2019,17 @@ check_cfunc(const rb_callable_method_entry_t *me, VALUE (*func)(ANYARGS))
return false;
}
else {
#if __has_attribute(transparent_union)
return me->def->body.cfunc.func == func.anyargs;
#else
return me->def->body.cfunc.func == func;
#endif
}
}
}
static inline int
vm_method_cfunc_is(const rb_iseq_t *iseq, CALL_DATA cd, VALUE recv, VALUE (*func)(ANYARGS))
vm_method_cfunc_is(const rb_iseq_t *iseq, CALL_DATA cd, VALUE recv, cfunc_type func)
{
VM_ASSERT(iseq != NULL);
const struct rb_callcache *cc = vm_search_method((VALUE)iseq, cd, recv);