128 lines
3.9 KiB
C++
128 lines
3.9 KiB
C++
// RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -std=c++17 -verify %s
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void clang_analyzer_eval(bool);
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void array_init() {
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int arr[] = {1, 2, 3, 4, 5};
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auto [a, b, c, d, e] = arr;
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clang_analyzer_eval(a == 1); // expected-warning{{TRUE}}
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clang_analyzer_eval(b == 2); // expected-warning{{TRUE}}
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clang_analyzer_eval(c == 3); // expected-warning{{TRUE}}
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clang_analyzer_eval(d == 4); // expected-warning{{TRUE}}
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clang_analyzer_eval(e == 5); // expected-warning{{TRUE}}
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}
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void array_uninit() {
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int arr[5];
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auto [a, b, c, d, e] = arr;
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int x = e; // expected-warning{{Assigned value is garbage or undefined}}
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}
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void lambda_init() {
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int arr[] = {1, 2, 3, 4, 5};
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auto l = [arr] { return arr[0]; }();
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clang_analyzer_eval(l == 1); // expected-warning{{TRUE}}
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l = [arr] { return arr[1]; }();
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clang_analyzer_eval(l == 2); // expected-warning{{TRUE}}
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l = [arr] { return arr[2]; }();
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clang_analyzer_eval(l == 3); // expected-warning{{TRUE}}
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l = [arr] { return arr[3]; }();
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clang_analyzer_eval(l == 4); // expected-warning{{TRUE}}
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l = [arr] { return arr[4]; }();
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clang_analyzer_eval(l == 5); // expected-warning{{TRUE}}
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}
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void lambda_uninit() {
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int arr[5];
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// FIXME: These should be Undefined, but we fail to read Undefined from a lazyCompoundVal
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int l = [arr] { return arr[0]; }();
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clang_analyzer_eval(l); // expected-warning{{UNKNOWN}}
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l = [arr] { return arr[1]; }();
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clang_analyzer_eval(l); // expected-warning{{UNKNOWN}}
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l = [arr] { return arr[2]; }();
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clang_analyzer_eval(l); // expected-warning{{UNKNOWN}}
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l = [arr] { return arr[3]; }();
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clang_analyzer_eval(l); // expected-warning{{UNKNOWN}}
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l = [arr] { return arr[4]; }();
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clang_analyzer_eval(l); // expected-warning{{UNKNOWN}}
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}
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struct S {
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int arr[5];
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};
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void copy_ctor_init() {
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S orig;
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orig.arr[0] = 1;
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orig.arr[1] = 2;
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orig.arr[2] = 3;
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orig.arr[3] = 4;
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orig.arr[4] = 5;
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S copy = orig;
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clang_analyzer_eval(copy.arr[0] == 1); // expected-warning{{TRUE}}
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clang_analyzer_eval(copy.arr[1] == 2); // expected-warning{{TRUE}}
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clang_analyzer_eval(copy.arr[2] == 3); // expected-warning{{TRUE}}
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clang_analyzer_eval(copy.arr[3] == 4); // expected-warning{{TRUE}}
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clang_analyzer_eval(copy.arr[4] == 5); // expected-warning{{TRUE}}
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}
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void copy_ctor_uninit() {
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S orig;
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S copy = orig;
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// FIXME: These should be Undefined, but we fail to read Undefined from a lazyCompoundVal.
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// If the struct is not considered a small struct, instead of a copy, we store a lazy compound value.
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// As the struct has an array data member, it is not considered small.
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clang_analyzer_eval(copy.arr[0]); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(copy.arr[1]); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(copy.arr[2]); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(copy.arr[3]); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(copy.arr[4]); // expected-warning{{UNKNOWN}}
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}
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void move_ctor_init() {
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S orig;
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orig.arr[0] = 1;
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orig.arr[1] = 2;
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orig.arr[2] = 3;
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orig.arr[3] = 4;
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orig.arr[4] = 5;
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S moved = (S &&) orig;
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clang_analyzer_eval(moved.arr[0] == 1); // expected-warning{{TRUE}}
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clang_analyzer_eval(moved.arr[1] == 2); // expected-warning{{TRUE}}
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clang_analyzer_eval(moved.arr[2] == 3); // expected-warning{{TRUE}}
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clang_analyzer_eval(moved.arr[3] == 4); // expected-warning{{TRUE}}
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clang_analyzer_eval(moved.arr[4] == 5); // expected-warning{{TRUE}}
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}
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void move_ctor_uninit() {
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S orig;
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S moved = (S &&) orig;
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// FIXME: These should be Undefined, but we fail to read Undefined from a lazyCompoundVal.
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clang_analyzer_eval(moved.arr[0]); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(moved.arr[1]); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(moved.arr[2]); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(moved.arr[3]); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(moved.arr[4]); // expected-warning{{UNKNOWN}}
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}
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