forked from OSchip/llvm-project
81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -Wall -Wunused-macros -Wunused-parameter -Wno-uninitialized -verify %s
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// rdar://8365684
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struct S {
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void m1() { int b; while (b==b); } // expected-warning {{always evaluates to true}}
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wtautological-compare"
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void m2() { int b; while (b==b); }
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#pragma clang diagnostic pop
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void m3() { int b; while (b==b); } // expected-warning {{always evaluates to true}}
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};
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//------------------------------------------------------------------------------
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wtautological-compare"
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template <typename T>
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struct TS {
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void m() { T b; while (b==b); }
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};
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#pragma clang diagnostic pop
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void f() {
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TS<int> ts;
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ts.m();
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}
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//------------------------------------------------------------------------------
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#define UNUSED_MACRO1 // expected-warning {{macro is not used}}
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wunused-macros"
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#define UNUSED_MACRO2
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#pragma clang diagnostic pop
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//------------------------------------------------------------------------------
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wreturn-type"
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int g() { }
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#pragma clang diagnostic pop
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//------------------------------------------------------------------------------
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void ww(
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wunused-parameter"
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int x,
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#pragma clang diagnostic pop
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int y) // expected-warning {{unused}}
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{
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}
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//------------------------------------------------------------------------------
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struct S2 {
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int x, y;
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S2() :
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wreorder"
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y(),
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x()
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#pragma clang diagnostic pop
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{}
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};
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//------------------------------------------------------------------------------
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// rdar://8790245
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#define MYMACRO \
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_Pragma("clang diagnostic push") \
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_Pragma("clang diagnostic ignored \"-Wunknown-pragmas\"") \
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_Pragma("clang diagnostic pop")
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MYMACRO
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#undef MYMACRO
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//------------------------------------------------------------------------------
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