1 /* go-typedesc-equal.c -- return whether two type descriptors are equal.
2 
3    Copyright 2009 The Go Authors. All rights reserved.
4    Use of this source code is governed by a BSD-style
5    license that can be found in the LICENSE file.  */
6 
7 #include "runtime.h"
8 #include "go-string.h"
9 #include "go-type.h"
10 
11 /* Compare type descriptors for equality.  This is necessary because
12    types may have different descriptors in different shared libraries.
13    Also, unnamed types may have multiple type descriptors even in a
14    single shared library.  */
15 
16 _Bool
__go_type_descriptors_equal(const struct __go_type_descriptor * td1,const struct __go_type_descriptor * td2)17 __go_type_descriptors_equal (const struct __go_type_descriptor *td1,
18 			     const struct __go_type_descriptor *td2)
19 {
20   if (td1 == td2)
21     return 1;
22   /* In a type switch we can get a NULL descriptor.  */
23   if (td1 == NULL || td2 == NULL)
24     return 0;
25   if (td1->__code != td2->__code || td1->__hash != td2->__hash)
26     return 0;
27   return __go_ptr_strings_equal (td1->__reflection, td2->__reflection);
28 }
29