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// RUN: %clang_cc1 -verify -fsyntax-only -Wlarge-by-value-copy=100 %s
// rdar://8548050
namespace rdar8548050 {
struct S100 {
char x[100];
};
struct S101 {
char x[101];
};
S100 f100(S100 s) { return s; }
S101 f101(S101 s) { return s; } // expected-warning {{return value of 'f101' is a large (101 bytes) pass-by-value object}} \
// expected-warning {{'s' is a large (101 bytes) pass-by-value argument}}
void f101_no_param_name(S101) {} // expected-warning {{'' is a large (101 bytes) pass-by-value argument}}
// FIXME: Don't warn when when the return value is subject to (N)RVO.
template <typename T> T foo_template(T);
template <> S101 foo_template(S101) { return S101(); } // expected-warning {{return value of 'foo_template<rdar8548050::S101>' is a large}}
// expected-warning@-1 {{'' is a large (101 bytes) pass-by-value argument}}
typedef int Arr[200];
void farr(Arr a) { }
struct NonPOD {
char x[200];
virtual void m();
};
NonPOD fNonPOD(NonPOD s) { return s; }
template <unsigned size>
struct TS {
char x[size];
};
template <unsigned size>
void tf(TS<size> ts) {} // expected-warning {{ts' is a large (300 bytes) pass-by-value argument}}
void g() {
TS<300> ts;
tf<300>(ts); // expected-note {{instantiation}}
}
}
template<typename T> class DependentPOD {
enum b { x };
b foo() { return x; }
};
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