1 // PR 84497 mismatch with thread constructor fn weakness 2 // { dg-do compile { target c++11 } } 3 // { dg-require-weak "" } 4 // { dg-require-alias "" } 5 // { dg-skip-if "No .weak" { { hppa*-*-hpux* } && { ! lp64 } } } 6 7 struct Base 8 { 9 int m; 10 11 Base() noexcept = default; // trivial but not constexpr 12 ~Base() noexcept = default; 13 }; 14 15 struct Derived : Base {}; 16 struct Container { 17 Base m; 18 }; 19 20 #ifdef DEF 21 // This bit for exposition only. 22 // All items placed in .tbss 23 // __tls_init simply sets __tls_guard 24 // no aliases to __tls_init generated 25 thread_local Base base_obj; 26 thread_local Derived derived_obj; 27 thread_local Container container_obj; 28 #else 29 // Erroneously created strong undef refs to 30 // _ZTH11derived_obj, _ZTH13container_obj, _ZTH8base_obj 31 extern thread_local Base base_obj; 32 extern thread_local Derived derived_obj; 33 extern thread_local Container container_obj; main()34int main() { return !(&base_obj && &derived_obj && &container_obj);} 35 #endif 36 37 // { dg-final { scan-assembler ".weak\[ \t\]*_ZTH8base_obj" } } 38 // { dg-final { scan-assembler ".weak\[ \t\]*_ZTH11derived_obj" } } 39 // { dg-final { scan-assembler ".weak\[ \t\]*_ZTH13container_obj" } } 40