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https://github.com/golang/go
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2a8229d96e
The dlopen function returns an opaque handle, and it is possible for it to look like a Go pointer, causing garbage collector and cgo confusion. Fixes #23663 Change-Id: Id080e2bbcee8cfa7ac4a457a927f96949eb913f8 Reviewed-on: https://go-review.googlesource.com/91596 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
30 lines
744 B
C
30 lines
744 B
C
// Copyright 2015 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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// +build !windows
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#include <stdint.h>
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#include <dlfcn.h>
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// Write our own versions of dlopen/dlsym/dlclose so that we represent
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// the opaque handle as a Go uintptr rather than a Go pointer to avoid
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// garbage collector confusion. See issue 23663.
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uintptr_t dlopen4029(char* name, int flags) {
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return (uintptr_t)(dlopen(name, flags));
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}
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uintptr_t dlsym4029(uintptr_t handle, char* name) {
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return (uintptr_t)(dlsym((void*)(handle), name));
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}
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int dlclose4029(uintptr_t handle) {
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return dlclose((void*)(handle));
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}
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void call4029(void *arg) {
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void (*fn)(void) = arg;
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fn();
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}
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