| 1 | // RUN: %clang_cc1 -fsyntax-only -Wall -Wunused-macros -Wunused-parameter -Wno-uninitialized -verify %s |
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| 2 | |
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| 3 | // rdar://8365684 |
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| 4 | struct S { |
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| 5 | void m1() { int b; while (b==b); } // expected-warning {{always evaluates to true}} |
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| 6 | |
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| 7 | #pragma clang diagnostic push |
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| 8 | #pragma clang diagnostic ignored "-Wtautological-compare" |
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| 9 | void m2() { int b; while (b==b); } |
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| 10 | #pragma clang diagnostic pop |
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| 11 | |
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| 12 | void m3() { int b; while (b==b); } // expected-warning {{always evaluates to true}} |
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| 13 | }; |
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| 14 | |
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| 15 | //------------------------------------------------------------------------------ |
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| 16 | |
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| 17 | #pragma clang diagnostic push |
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| 18 | #pragma clang diagnostic ignored "-Wtautological-compare" |
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| 19 | template <typename T> |
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| 20 | struct TS { |
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| 21 | void m() { T b; while (b==b); } |
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| 22 | }; |
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| 23 | #pragma clang diagnostic pop |
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| 24 | |
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| 25 | void f() { |
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| 26 | TS<int> ts; |
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| 27 | ts.m(); |
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| 28 | } |
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| 29 | |
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| 30 | //------------------------------------------------------------------------------ |
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| 31 | |
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| 32 | #define UNUSED_MACRO1 // expected-warning {{macro is not used}} |
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| 33 | |
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| 34 | #pragma clang diagnostic push |
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| 35 | #pragma clang diagnostic ignored "-Wunused-macros" |
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| 36 | #define UNUSED_MACRO2 |
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| 37 | #pragma clang diagnostic pop |
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| 38 | |
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| 39 | //------------------------------------------------------------------------------ |
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| 40 | |
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| 41 | #pragma clang diagnostic push |
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| 42 | #pragma clang diagnostic ignored "-Wreturn-type" |
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| 43 | int g() { } |
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| 44 | #pragma clang diagnostic pop |
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| 45 | |
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| 46 | //------------------------------------------------------------------------------ |
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| 47 | |
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| 48 | void ww( |
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| 49 | #pragma clang diagnostic push |
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| 50 | #pragma clang diagnostic ignored "-Wunused-parameter" |
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| 51 | int x, |
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| 52 | #pragma clang diagnostic pop |
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| 53 | int y) // expected-warning {{unused}} |
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| 54 | { |
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| 55 | } |
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| 56 | |
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| 57 | //------------------------------------------------------------------------------ |
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| 58 | |
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| 59 | struct S2 { |
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| 60 | int x, y; |
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| 61 | S2() : |
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| 62 | #pragma clang diagnostic push |
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| 63 | #pragma clang diagnostic ignored "-Wreorder" |
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| 64 | y(), |
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| 65 | x() |
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| 66 | #pragma clang diagnostic pop |
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| 67 | {} |
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| 68 | }; |
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| 69 | |
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| 70 | //------------------------------------------------------------------------------ |
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| 71 | |
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| 72 | // rdar://8790245 |
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| 73 | #define MYMACRO \ |
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| 74 | _Pragma("clang diagnostic push") \ |
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| 75 | _Pragma("clang diagnostic ignored \"-Wunknown-pragmas\"") \ |
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| 76 | _Pragma("clang diagnostic pop") |
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| 77 | MYMACRO |
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| 78 | #undef MYMACRO |
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| 79 | |
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| 80 | //------------------------------------------------------------------------------ |
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| 81 | |
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