forked from OSchip/llvm-project
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
// RUN: %clang_cc1 -analyze -checker-cfref -analyzer-store=region -verify %s
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struct s {
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int data;
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};
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struct s global;
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void g(int);
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void f4() {
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int a;
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if (global.data == 0)
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a = 3;
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if (global.data == 0) // When the true branch is feasible 'a = 3'.
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g(a); // no-warning
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}
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// Test uninitialized value due to part of the structure being uninitialized.
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struct TestUninit { int x; int y; };
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struct TestUninit test_uninit_aux();
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void test_uninit_pos() {
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struct TestUninit v1 = { 0, 0 };
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struct TestUninit v2 = test_uninit_aux();
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int z;
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v1.y = z; // expected-warning{{Assigned value is garbage or undefined}}
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test_unit_aux2(v2.x + v1.y);
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}
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void test_uninit_pos_2() {
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struct TestUninit v1 = { 0, 0 };
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struct TestUninit v2;
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test_unit_aux2(v2.x + v1.y); // expected-warning{{The left operand of '+' is a garbage value}}
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}
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void test_uninit_pos_3() {
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struct TestUninit v1 = { 0, 0 };
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struct TestUninit v2;
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test_unit_aux2(v1.y + v2.x); // expected-warning{{The right operand of '+' is a garbage value}}
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}
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void test_uninit_neg() {
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struct TestUninit v1 = { 0, 0 };
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struct TestUninit v2 = test_uninit_aux();
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test_unit_aux2(v2.x + v1.y); // no-warning
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}
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