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111
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1 /* go-typedesc-equal.c -- return whether two type descriptors are equal.
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2
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3 Copyright 2009 The Go Authors. All rights reserved.
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4 Use of this source code is governed by a BSD-style
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5 license that can be found in the LICENSE file. */
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6
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7 #include "runtime.h"
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8 #include "go-string.h"
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9 #include "go-type.h"
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10
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11 /* Compare type descriptors for equality. This is necessary because
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12 types may have different descriptors in different shared libraries.
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13 Also, unnamed types may have multiple type descriptors even in a
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14 single shared library. */
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15
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16 _Bool
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17 __go_type_descriptors_equal (const struct __go_type_descriptor *td1,
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18 const struct __go_type_descriptor *td2)
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19 {
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20 if (td1 == td2)
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21 return 1;
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22 /* In a type switch we can get a NULL descriptor. */
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23 if (td1 == NULL || td2 == NULL)
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24 return 0;
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25 if (td1->__code != td2->__code || td1->__hash != td2->__hash)
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26 return 0;
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27 return __go_ptr_strings_equal (td1->__reflection, td2->__reflection);
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28 }
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