diff options
Diffstat (limited to 'gcc/testsuite/g++.dg/ext/has_trivial_assign.C')
-rw-r--r-- | gcc/testsuite/g++.dg/ext/has_trivial_assign.C | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/ext/has_trivial_assign.C b/gcc/testsuite/g++.dg/ext/has_trivial_assign.C new file mode 100644 index 000000000..dce0f8b3a --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/has_trivial_assign.C @@ -0,0 +1,106 @@ +// { dg-do run } +#include <cassert> + +struct A +{ + double a; + double b; +}; + +union U +{ + double a; + double b; +}; + +struct B +{ + B& operator=(const B&) { return *this;} +}; + +struct C +{ + virtual int f() { return 1; } +}; + +struct D +: public B { }; + +struct E +: public A { }; + +struct F +{ + A a; +}; + +struct G +{ + B b; +}; + +template<typename T> + bool + f() + { return __has_trivial_assign(T); } + +template<typename T> + class My + { + public: + bool + f() + { return !!__has_trivial_assign(T); } + }; + +template<typename T> + class My2 + { + public: + static const bool trait = __has_trivial_assign(T); + }; + +template<typename T> + const bool My2<T>::trait; + +template<typename T, bool b = __has_trivial_assign(T)> + struct My3_help + { static const bool trait = b; }; + +template<typename T, bool b> + const bool My3_help<T, b>::trait; + +template<typename T> + class My3 + { + public: + bool + f() + { return My3_help<T>::trait; } + }; + +#define PTEST(T) (__has_trivial_assign(T) && f<T>() \ + && My<T>().f() && My2<T>::trait && My3<T>().f()) + +#define NTEST(T) (!__has_trivial_assign(T) && !f<T>() \ + && !My<T>().f() && !My2<T>::trait && !My3<T>().f()) + +int main() +{ + assert (PTEST (int)); + assert (NTEST (int (int))); + assert (NTEST (void)); + assert (PTEST (A)); + assert (PTEST (U)); + assert (NTEST (B)); + assert (NTEST (C)); + assert (NTEST (D)); + assert (PTEST (E)); + assert (PTEST (E[])); + assert (PTEST (F)); + assert (NTEST (G)); + assert (NTEST (const A)); + assert (NTEST (A&)); + + return 0; +} |