diff --git a/gcc/cp/typeck.cc b/gcc/cp/typeck.cc index fe8aceddffa..4b382b95de1 100644 --- a/gcc/cp/typeck.cc +++ b/gcc/cp/typeck.cc @@ -3870,7 +3870,11 @@ cp_build_indirect_ref_1 (location_t loc, tree ptr, ref_operator errorstring, return error_mark_node; } else if (do_fold && TREE_CODE (pointer) == ADDR_EXPR - && same_type_p (t, TREE_TYPE (TREE_OPERAND (pointer, 0)))) + && same_type_p (t, TREE_TYPE (TREE_OPERAND (pointer, 0))) + /* Don't let this change the value category. '*&TARGET_EXPR' + is an lvalue, but folding it into 'TARGET_EXPR' would turn + it into a prvalue of class type. */ + && lvalue_p (TREE_OPERAND (pointer, 0))) /* The POINTER was something like `&x'. We simplify `*&x' to `x'. */ return TREE_OPERAND (pointer, 0); diff --git a/gcc/testsuite/g++.dg/cpp0x/alignas23.C b/gcc/testsuite/g++.dg/cpp0x/alignas23.C new file mode 100644 index 00000000000..3c218a3542c --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp0x/alignas23.C @@ -0,0 +1,15 @@ +// PR c++/117512 +// { dg-do compile { target c++11 } } + +struct A { + alignas(sizeof (long long)) int b; + ~A (); +}; +A foo (int); + +void +bar () +{ + A e = { 0 }; + A d = foo (0) = e; +} diff --git a/gcc/testsuite/g++.dg/ext/align3.C b/gcc/testsuite/g++.dg/ext/align3.C new file mode 100644 index 00000000000..6a20dfc57b1 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/align3.C @@ -0,0 +1,14 @@ +// PR c++/117512 + +struct A { + __attribute__((aligned)) int b; + ~A (); +}; +A foo (int); + +void +bar () +{ + A e = { 0 }; + A d = foo (0) = e; +} diff --git a/gcc/testsuite/g++.dg/ext/align4.C b/gcc/testsuite/g++.dg/ext/align4.C new file mode 100644 index 00000000000..b0d83e30237 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/align4.C @@ -0,0 +1,14 @@ +// PR c++/117512 + +struct __attribute__((aligned (2 * sizeof (int)))) A { + int b; + ~A (); +}; +A foo (int); + +void +bar () +{ + A e = { 0 }; + A d = foo (0) = e; +} diff --git a/gcc/testsuite/g++.dg/ext/align5.C b/gcc/testsuite/g++.dg/ext/align5.C new file mode 100644 index 00000000000..7e821274352 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/align5.C @@ -0,0 +1,18 @@ +// PR c++/117512 +// { dg-do run } + +struct A { + __attribute__((aligned(2 * sizeof (int)))) int i; + ~A() {} +}; + +A foo () { A a = { 19 }; return a; } + +int +main () +{ + A a = { 42 }; + A r = foo () = a; + if (r.i != 42) + __builtin_abort (); +}