| 1 | // RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -verify %s |
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| 2 | |
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| 3 | typedef int __attribute__((ext_vector_type(2))) V; |
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| 4 | |
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| 5 | void clang_analyzer_warnIfReached(); |
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| 6 | void clang_analyzer_numTimesReached(); |
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| 7 | void clang_analyzer_eval(int); |
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| 8 | |
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| 9 | int flag; |
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| 10 | |
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| 11 | V pass_through_and_set_flag(V v) { |
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| 12 | flag = 1; |
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| 13 | return v; |
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| 14 | } |
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| 15 | |
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| 16 | V dont_crash_and_dont_split_state(V x, V y) { |
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| 17 | flag = 0; |
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| 18 | V z = x && pass_through_and_set_flag(y); |
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| 19 | clang_analyzer_eval(flag); // expected-warning{{TRUE}} |
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| 20 | // FIXME: For now we treat vector operator && as short-circuit, |
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| 21 | // but in fact it is not. It should always evaluate |
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| 22 | // pass_through_and_set_flag(). It should not split state. |
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| 23 | // Now we also get FALSE on the other path. |
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| 24 | // expected-warning@-5{{FALSE}} |
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| 25 | |
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| 26 | // FIXME: Should be 1 since we should not split state. |
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| 27 | clang_analyzer_numTimesReached(); // expected-warning{{2}} |
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| 28 | return z; |
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| 29 | } |
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| 30 | |
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| 31 | void test_read() { |
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| 32 | V x; |
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| 33 | x[0] = 0; |
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| 34 | x[1] = 1; |
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| 35 | |
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| 36 | clang_analyzer_eval(x[0] == 0); // expected-warning{{TRUE}} |
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| 37 | } |
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| 38 | |
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| 39 | V return_vector() { |
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| 40 | V z; |
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| 41 | z[0] = 0; |
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| 42 | z[1] = 0; |
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| 43 | return z; |
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| 44 | } |
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| 45 | |
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| 46 | int test_vector_access() { |
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| 47 | return return_vector()[0]; // no-crash no-warning |
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| 48 | } |
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| 49 | |
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| 50 | @interface I |
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| 51 | @property V v; |
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| 52 | @end |
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| 53 | |
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| 54 | // Do not crash on subscript operations into ObjC properties. |
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| 55 | int myfunc(I *i2) { |
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| 56 | int out = i2.v[0]; // no-crash no-warning |
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| 57 | |
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| 58 | // Check that the analysis continues. |
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| 59 | clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} |
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| 60 | return out; |
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| 61 | } |
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| 62 | |
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