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// RUN: %clang_cc1 -analyze -std=c++11 -analyzer-checker=alpha.clone.CloneChecker -verify %s
// Tests that macros and non-macro clones aren't mixed into the same hash
// group. This is currently necessary as all clones in a hash group need
// to have the same complexity value. Macros have smaller complexity values
// and need to be in their own hash group.
int foo(int a) { // expected-warning{{Duplicate code detected}}
a = a + 1;
a = a + 1 / 1;
a = a + 1 + 1 + 1;
a = a + 1 - 1 + 1 + 1;
a = a + 1 * 1 + 1 + 1 + 1;
a = a + 1 / 1 + 1 + 1 + 1;
return a;
}
int fooClone(int a) { // expected-note{{Similar code here}}
a = a + 1;
a = a + 1 / 1;
a = a + 1 + 1 + 1;
a = a + 1 - 1 + 1 + 1;
a = a + 1 * 1 + 1 + 1 + 1;
a = a + 1 / 1 + 1 + 1 + 1;
return a;
}
// Below is the same AST as above but this time generated with macros. The
// clones below should land in their own hash group for the reasons given above.
#define ASSIGN(T, V) T = T + V
int macro(int a) { // expected-warning{{Duplicate code detected}}
ASSIGN(a, 1);
ASSIGN(a, 1 / 1);
ASSIGN(a, 1 + 1 + 1);
ASSIGN(a, 1 - 1 + 1 + 1);
ASSIGN(a, 1 * 1 + 1 + 1 + 1);
ASSIGN(a, 1 / 1 + 1 + 1 + 1);
return a;
}
int macroClone(int a) { // expected-note{{Similar code here}}
ASSIGN(a, 1);
ASSIGN(a, 1 / 1);
ASSIGN(a, 1 + 1 + 1);
ASSIGN(a, 1 - 1 + 1 + 1);
ASSIGN(a, 1 * 1 + 1 + 1 + 1);
ASSIGN(a, 1 / 1 + 1 + 1 + 1);
return a;
}
// FIXME: Macros with empty definitions in the AST are currently ignored.
#define EMPTY
int fooFalsePositiveClone(int a) { // expected-note{{Similar code here}}
a = EMPTY a + 1;
a = a + 1 / 1;
a = a + 1 + 1 + 1;
a = a + 1 - 1 + 1 + 1;
a = a + 1 * 1 + 1 + 1 + 1;
a = a + 1 / 1 + 1 + 1 + 1;
return a;
}
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