33 lines
1.0 KiB
C
33 lines
1.0 KiB
C
/* go-unsafe-newarray.c -- unsafe.NewArray function for Go.
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Copyright 2009 The Go Authors. All rights reserved.
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Use of this source code is governed by a BSD-style
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license that can be found in the LICENSE file. */
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#include "runtime.h"
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#include "go-alloc.h"
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#include "go-type.h"
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#include "interface.h"
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/* Implement unsafe_NewArray, called from the reflect package. */
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void *unsafe_NewArray (struct __go_empty_interface type, int n)
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asm ("libgo_reflect.reflect.unsafe_NewArray");
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/* The dynamic type of the argument will be a pointer to a type
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descriptor. */
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void *
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unsafe_NewArray (struct __go_empty_interface type, int n)
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{
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const struct __go_type_descriptor *descriptor;
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if (((uintptr_t) type.__type_descriptor & reflectFlags) != 0)
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runtime_panicstring ("invalid interface value");
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/* FIXME: We should check __type_descriptor to verify that this is
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really a type descriptor. */
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descriptor = (const struct __go_type_descriptor *) type.__object;
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return __go_alloc (descriptor->__size * n);
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}
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