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40 lines
690 B
40 lines
690 B
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <stdlib.h>
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void (*global)(void**);
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struct T {
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void (*go)();
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};
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struct S {
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struct T* t;
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void* x;
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};
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void call_global_fun_ptr_ok(void** x) {
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if (global != 0) {
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global(x);
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}
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}
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void test_null_then_deref_ok(struct S* s) {
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if (s == 0)
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return;
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call_global_fun_ptr_ok(&s->x);
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if (s->t->go) { // should *not* give NULL_TEST_AFTER_DEREFERENCE
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s->t->go();
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}
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}
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void deref_after_null_check_bad(int* x) {
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if (x == 0) {
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*x = 1; // should give NULL_DEREFERENCE
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}
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}
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