| 1 | // RUN: %clang_cc1 %s -fsyntax-only -verify -fblocks -Wmissing-noreturn -Wno-unreachable-code |
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| 2 | |
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| 3 | int j; |
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| 4 | void test1() { // expected-warning {{function 'test1' could be declared with attribute 'noreturn'}} |
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| 5 | ^ (void) { while (1) { } }(); |
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| 6 | ^ (void) { if (j) while (1) { } }(); |
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| 7 | while (1) { } |
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| 8 | } |
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| 9 | |
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| 10 | void test2() { |
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| 11 | if (j) while (1) { } |
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| 12 | } |
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| 13 | |
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| 14 | __attribute__((__noreturn__)) |
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| 15 | void test2_positive() { |
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| 16 | if (j) while (1) { } |
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| 17 | } // expected-warning{{function declared 'noreturn' should not return}} |
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| 18 | |
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| 19 | |
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| 20 | // This test case illustrates that we don't warn about the missing return |
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| 21 | // because the function is marked noreturn and there is an infinite loop. |
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| 22 | extern int foo_test_3(); |
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| 23 | __attribute__((__noreturn__)) void* test3(int arg) { |
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| 24 | while (1) foo_test_3(); |
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| 25 | } |
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| 26 | |
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| 27 | __attribute__((__noreturn__)) void* test3_positive(int arg) { |
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| 28 | while (0) foo_test_3(); |
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| 29 | } // expected-warning{{function declared 'noreturn' should not return}} |
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| 30 | |
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| 31 | |
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| 32 | // PR5298 - -Wmissing-noreturn shouldn't warn if the function is already |
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| 33 | // declared noreturn. |
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| 34 | void __attribute__((noreturn)) |
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| 35 | test4() { |
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| 36 | test2_positive(); |
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| 37 | } |
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| 38 | |
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| 39 | // Do not warn here. |
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| 40 | _Noreturn void test5() { |
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| 41 | test2_positive(); |
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| 42 | } |
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| 43 | |
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| 44 | // rdar://16274746 |
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| 45 | void test6() |
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| 46 | { |
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| 47 | (void)^{ |
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| 48 | for(;;) |
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| 49 | ; |
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| 50 | }; |
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| 51 | } |
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| 52 | |
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| 53 | |
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