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//===-- msan_loadable.cc --------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of MemorySanitizer.
//
// MemorySanitizer unit tests.
//===----------------------------------------------------------------------===//
#include "msan/msan_interface_internal.h"
#include <stdlib.h>
static void *dso_global;
// No name mangling.
extern "C" {
__attribute__((constructor))
void loadable_module_init(void) {
if (!__msan_has_dynamic_component())
return;
// The real test is that this compare should not make an uninit.
if (dso_global == NULL)
dso_global = malloc(4);
}
__attribute__((destructor))
void loadable_module_fini(void) {
if (!__msan_has_dynamic_component())
return;
free(dso_global);
// *Don't* overwrite it with NULL! That would unpoison it, but our test
// relies on reloading at the same address and keeping the poison.
}
void **get_dso_global() {
return &dso_global;
}
}
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