blob: c95443de72d1b0d80a21ab142c0fd2b291f3bde3 [file] [log] [blame]
Artem Dergachevba816322016-07-26 18:13:12 +00001// RUN: %clang_cc1 -analyze -std=c++11 -analyzer-checker=alpha.clone.CloneChecker -verify %s
2
3// This tests if we search for clones in functions.
4
5void log();
6
Artem Dergachevc87d2a62016-10-03 08:11:50 +00007int max(int a, int b) { // expected-warning{{Duplicate code detected}}
Artem Dergachevba816322016-07-26 18:13:12 +00008 log();
9 if (a > b)
10 return a;
11 return b;
12}
13
Artem Dergachevc87d2a62016-10-03 08:11:50 +000014int maxClone(int x, int y) { // expected-note{{Similar code here}}
Artem Dergachevba816322016-07-26 18:13:12 +000015 log();
16 if (x > y)
17 return x;
18 return y;
19}
20
21// Functions below are not clones and should not be reported.
22
Artem Dergachev78692ea2016-08-02 12:21:09 +000023// The next two functions test that statement classes are still respected when
24// checking for clones in expressions. This will show that the statement
25// specific data of all base classes is collected, and not just the data of the
26// first base class.
27int testBaseClass(int a, int b) { // no-warning
28 log();
29 if (a > b)
30 return true ? a : b;
31 return b;
32}
33int testBaseClass2(int a, int b) { // no-warning
34 log();
35 if (a > b)
36 return __builtin_choose_expr(true, a, b);
37 return b;
38}
39
Artem Dergachev7a0088b2016-08-04 19:37:00 +000040// No clone because of the different comparison operator.
Artem Dergachev78692ea2016-08-02 12:21:09 +000041int min1(int a, int b) { // no-warning
42 log();
43 if (a < b)
44 return a;
45 return b;
46}
47
Artem Dergachev7a0088b2016-08-04 19:37:00 +000048// No clone because of the different pattern in which the variables are used.
49int min2(int a, int b) { // no-warning
50 log();
51 if (a > b)
52 return b;
53 return a;
54}
55
Artem Dergachevba816322016-07-26 18:13:12 +000056int foo(int a, int b) { // no-warning
57 return a + b;
58}