cda28e203d
This patch addresses the lack of support for parenthesized
initialization in the Clang Static Analyzer's `ExprEngine`. Previously,
initializations such as `V v(1, 2);` were not modeled properly, which
could lead to false negatives in analyses like `DivideZero`.
```cpp
struct A {
int x;
A(int v) : x(v) {}
};
int t() {
A a(42);
return 1 / (a.x - 42); // expected-warning {{Division by zero}}
}
```
Fixes #148875
74 lines
1.0 KiB
C++
74 lines
1.0 KiB
C++
// RUN: %clang_analyze_cc1 -analyzer-checker=core.DivideZero -verify %s
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int fooPR10616 (int qX ) {
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int a, c, d;
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d = (qX-1);
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while ( d != 0 ) {
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d = c - (c/d) * d;
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}
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return (a % (qX-1)); // expected-warning {{Division by zero}}
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}
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namespace GH148875 {
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struct A {
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int x;
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A(int v) : x(v) {}
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};
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struct B {
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int x;
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B() : x(0) {}
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};
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struct C {
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int x, y;
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C(int a, int b) : x(a), y(b) {}
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};
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struct D {
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int x;
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};
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struct E {
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D d;
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E(int a) : d{a} {}
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};
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struct F {
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int x;
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};
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int t1() {
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A a{42};
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return 1 / (a.x - 42); // expected-warning {{Division by zero}}
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}
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int t2() {
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B b{};
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return 1 / b.x; // expected-warning {{Division by zero}}
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}
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int t3() {
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C c1{1, -1};
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return 1 / (c1.x + c1.y); // expected-warning {{Division by zero}}
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}
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int t4() {
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C c2{0, 0};
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return 1 / (c2.x + c2.y); // expected-warning {{Division by zero}}
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}
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int t5() {
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E e{32};
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return 1 / (e.d.x - 32); // expected-warning {{Division by zero}}
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}
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int t6() {
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F f{32};
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return 1 / (f.x - 32); // expected-warning {{Division by zero}}
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}
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}
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