diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c index 56bd772d01d72489771f31bc7596893feac4076a..62648841ac3ad14ace2c1696a9250b6354c5b157 100644 --- a/gcc/cp/decl.c +++ b/gcc/cp/decl.c @@ -2921,6 +2921,16 @@ duplicate_decls (tree newdecl, tree olddecl, bool hiding, bool was_hidden) snode->remove (); } + if (TREE_CODE (olddecl) == FUNCTION_DECL) + { + tree clone; + FOR_EACH_CLONE (clone, olddecl) + { + DECL_ATTRIBUTES (clone) = DECL_ATTRIBUTES (olddecl); + DECL_PRESERVE_P (clone) |= DECL_PRESERVE_P (olddecl); + } + } + /* Remove the associated constraints for newdecl, if any, before reclaiming memory. */ if (flag_concepts) diff --git a/gcc/testsuite/g++.dg/ext/attr-used-2.C b/gcc/testsuite/g++.dg/ext/attr-used-2.C new file mode 100644 index 0000000000000000000000000000000000000000..d7cf6e975bd1a735e289b7afa11862054dbb3e39 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/attr-used-2.C @@ -0,0 +1,15 @@ +// PR c++/67453 +// { dg-do compile } +// { dg-final { scan-assembler "_ZN1SC\[12]Ev" } } +// { dg-final { scan-assembler "_ZN1SD\[12]Ev" } } +// { dg-final { scan-assembler "_ZN1SC\[12]ERKS_" } } + +struct S { + S(); + ~S(); + S(const S&); +}; + +__attribute__((used)) inline S::S() { } +__attribute__((used)) inline S::~S() { } +__attribute__((used)) inline S::S(const S&) { }