| 1 | // RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=alpha.clone.CloneChecker -analyzer-config alpha.clone.CloneChecker:MinimumCloneComplexity=10 -verify %s |
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| 2 | |
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| 3 | // Tests that macros and non-macro clones aren't mixed into the same hash |
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| 4 | // group. This is currently necessary as all clones in a hash group need |
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| 5 | // to have the same complexity value. Macros have smaller complexity values |
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| 6 | // and need to be in their own hash group. |
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| 7 | |
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| 8 | int foo(int a) { // expected-warning{{Duplicate code detected}} |
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| 9 | a = a + 1; |
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| 10 | a = a + 1 / 1; |
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| 11 | a = a + 1 + 1 + 1; |
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| 12 | a = a + 1 - 1 + 1 + 1; |
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| 13 | a = a + 1 * 1 + 1 + 1 + 1; |
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| 14 | a = a + 1 / 1 + 1 + 1 + 1; |
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| 15 | return a; |
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| 16 | } |
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| 17 | |
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| 18 | int fooClone(int a) { // expected-note{{Similar code here}} |
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| 19 | a = a + 1; |
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| 20 | a = a + 1 / 1; |
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| 21 | a = a + 1 + 1 + 1; |
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| 22 | a = a + 1 - 1 + 1 + 1; |
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| 23 | a = a + 1 * 1 + 1 + 1 + 1; |
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| 24 | a = a + 1 / 1 + 1 + 1 + 1; |
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| 25 | return a; |
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| 26 | } |
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| 27 | |
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| 28 | // Below is the same AST as above but this time generated with macros. The |
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| 29 | // clones below should land in their own hash group for the reasons given above. |
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| 30 | |
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| 31 | #define ASSIGN(T, V) T = T + V |
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| 32 | |
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| 33 | int macro(int a) { // expected-warning{{Duplicate code detected}} |
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| 34 | ASSIGN(a, 1); |
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| 35 | ASSIGN(a, 1 / 1); |
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| 36 | ASSIGN(a, 1 + 1 + 1); |
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| 37 | ASSIGN(a, 1 - 1 + 1 + 1); |
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| 38 | ASSIGN(a, 1 * 1 + 1 + 1 + 1); |
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| 39 | ASSIGN(a, 1 / 1 + 1 + 1 + 1); |
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| 40 | return a; |
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| 41 | } |
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| 42 | |
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| 43 | int macroClone(int a) { // expected-note{{Similar code here}} |
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| 44 | ASSIGN(a, 1); |
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| 45 | ASSIGN(a, 1 / 1); |
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| 46 | ASSIGN(a, 1 + 1 + 1); |
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| 47 | ASSIGN(a, 1 - 1 + 1 + 1); |
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| 48 | ASSIGN(a, 1 * 1 + 1 + 1 + 1); |
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| 49 | ASSIGN(a, 1 / 1 + 1 + 1 + 1); |
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| 50 | return a; |
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| 51 | } |
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| 52 | |
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| 53 | // FIXME: Macros with empty definitions in the AST are currently ignored. |
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| 54 | |
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| 55 | #define EMPTY |
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| 56 | |
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| 57 | int fooFalsePositiveClone(int a) { // expected-note{{Similar code here}} |
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| 58 | a = EMPTY a + 1; |
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| 59 | a = a + 1 / 1; |
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| 60 | a = a + 1 + 1 + 1; |
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| 61 | a = a + 1 - 1 + 1 + 1; |
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| 62 | a = a + 1 * 1 + 1 + 1 + 1; |
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| 63 | a = a + 1 / 1 + 1 + 1 + 1; |
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| 64 | return a; |
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| 65 | } |
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| 66 | |
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| 67 | |
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| 68 | |
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