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