File: symbol-simplification-reassume.cpp

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (37 lines) | stat: -rw-r--r-- 1,098 bytes parent folder | download | duplicates (16) 
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
 
// RUN: %clang_analyze_cc1 %s \
// RUN:   -analyzer-checker=core \
// RUN:   -analyzer-checker=debug.ExprInspection \
// RUN:   -analyzer-config eagerly-assume=false \
// RUN:   -verify

// In this test we check whether the solver's symbol simplification mechanism
// is capable of re-assuming simiplified symbols.

void clang_analyzer_eval(bool);
void clang_analyzer_warnIfReached();

void test_reassume_false_range(int x, int y) {
  if (x + y != 0) // x + y == 0
    return;
  if (x != 1)     // x == 1
    return;
  clang_analyzer_eval(y == -1); // expected-warning{{TRUE}}
}

void test_reassume_true_range(int x, int y) {
  if (x + y != 1) // x + y == 1
    return;
  if (x != 1)     // x == 1
    return;
  clang_analyzer_eval(y == 0); // expected-warning{{TRUE}}
}

void test_reassume_inclusive_range(int x, int y) {
  if (x + y < 0 || x + y > 1) // x + y: [0, 1]
    return;
  if (x != 1)                 // x == 1
    return;
                              // y: [-1, 0]
  clang_analyzer_eval(y > 0); // expected-warning{{FALSE}}
  clang_analyzer_eval(y < -1);// expected-warning{{FALSE}}
}