68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
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// 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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// Tests that macros and non-macro clones aren't mixed into the same hash
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// group. This is currently necessary as all clones in a hash group need
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// to have the same complexity value. Macros have smaller complexity values
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// and need to be in their own hash group.
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int foo(int a) { // expected-warning{{Duplicate code detected}}
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a = a + 1;
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a = a + 1 / 1;
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a = a + 1 + 1 + 1;
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a = a + 1 - 1 + 1 + 1;
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a = a + 1 * 1 + 1 + 1 + 1;
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a = a + 1 / 1 + 1 + 1 + 1;
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return a;
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}
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int fooClone(int a) { // expected-note{{Similar code here}}
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a = a + 1;
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a = a + 1 / 1;
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a = a + 1 + 1 + 1;
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a = a + 1 - 1 + 1 + 1;
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a = a + 1 * 1 + 1 + 1 + 1;
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a = a + 1 / 1 + 1 + 1 + 1;
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return a;
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}
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// Below is the same AST as above but this time generated with macros. The
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// clones below should land in their own hash group for the reasons given above.
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#define ASSIGN(T, V) T = T + V
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int macro(int a) { // expected-warning{{Duplicate code detected}}
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ASSIGN(a, 1);
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ASSIGN(a, 1 / 1);
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ASSIGN(a, 1 + 1 + 1);
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ASSIGN(a, 1 - 1 + 1 + 1);
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ASSIGN(a, 1 * 1 + 1 + 1 + 1);
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ASSIGN(a, 1 / 1 + 1 + 1 + 1);
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return a;
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}
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int macroClone(int a) { // expected-note{{Similar code here}}
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ASSIGN(a, 1);
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ASSIGN(a, 1 / 1);
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ASSIGN(a, 1 + 1 + 1);
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ASSIGN(a, 1 - 1 + 1 + 1);
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ASSIGN(a, 1 * 1 + 1 + 1 + 1);
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ASSIGN(a, 1 / 1 + 1 + 1 + 1);
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return a;
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}
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// FIXME: Macros with empty definitions in the AST are currently ignored.
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#define EMPTY
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int fooFalsePositiveClone(int a) { // expected-note{{Similar code here}}
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a = EMPTY a + 1;
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a = a + 1 / 1;
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a = a + 1 + 1 + 1;
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a = a + 1 - 1 + 1 + 1;
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a = a + 1 * 1 + 1 + 1 + 1;
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a = a + 1 / 1 + 1 + 1 + 1;
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return a;
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}
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