1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
// RUN: %clang_analyze_cc1 %s \
// RUN: -analyzer-checker=core \
// RUN: -analyzer-checker=debug.ExprInspection \
// RUN: 2>&1 | FileCheck %s
// In this test we check whether the solver's symbol simplification mechanism
// is capable of reaching a fixpoint. This should be done after one iteration.
void clang_analyzer_printState();
void test(int a, int b, int c) {
if (a + b != c)
return;
clang_analyzer_printState();
// CHECK: "constraints": [
// CHECK-NEXT: { "symbol": "((reg_$0<int a>) + (reg_$1<int b>)) != (reg_$2<int c>)", "range": "{ [0, 0] }" }
// CHECK-NEXT: ],
// CHECK-NEXT: "equivalence_classes": [
// CHECK-NEXT: [ "(reg_$0<int a>) + (reg_$1<int b>)", "reg_$2<int c>" ]
// CHECK-NEXT: ],
// CHECK-NEXT: "disequality_info": null,
// Simplification starts here.
if (b != 0)
return;
clang_analyzer_printState();
// CHECK: "constraints": [
// CHECK-NEXT: { "symbol": "(reg_$0<int a>) != (reg_$2<int c>)", "range": "{ [0, 0] }" },
// CHECK-NEXT: { "symbol": "reg_$1<int b>", "range": "{ [0, 0] }" }
// CHECK-NEXT: ],
// CHECK-NEXT: "equivalence_classes": [
// CHECK-NEXT: [ "(reg_$0<int a>) != (reg_$2<int c>)" ],
// CHECK-NEXT: [ "reg_$0<int a>", "reg_$2<int c>" ]
// CHECK-NEXT: ],
// CHECK-NEXT: "disequality_info": null,
// Keep the symbols and the constraints! alive.
(void)(a * b * c);
return;
}
|
