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PR c++/72457 - ICE with list-value-initialized base. 

* init.c (expand_aggr_init_1): Only handle value-init of bases.
	* constexpr.c (build_data_member_initialization): Handle multiple
	initializers for the same field.

From-SVN: r238867
This commit is contained in:
Jason Merrill 2016-07-29 10:03:26 -04:00 committed by Jason Merrill
parent c63b1732d5
commit 49b5925f02
4 changed files with 31 additions and 4 deletions
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7
gcc/cp/ChangeLog
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@ -1,3 +1,10 @@
2016-07-29 Jason Merrill <jason@redhat.com>
PR c++/72457
* init.c (expand_aggr_init_1): Only handle value-init of bases.
* constexpr.c (build_data_member_initialization): Handle multiple
initializers for the same field.
2016-07-28 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/71665

7
gcc/cp/constexpr.c
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@ -391,7 +391,12 @@ build_data_member_initialization (tree t, vec<constructor_elt, va_gc> **vec)
gcc_assert (TREE_TYPE (member) == vtbl_ptr_type_node);
}
CONSTRUCTOR_APPEND_ELT (*vec, member, init);
/* Value-initialization can produce multiple initializers for the
same field; use the last one. */
if (!vec_safe_is_empty (*vec) && (*vec)->last().index == member)
(*vec)->last().value = init;
else
CONSTRUCTOR_APPEND_ELT (*vec, member, init);
return true;
}

6
gcc/cp/init.c
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@ -1818,9 +1818,9 @@ expand_aggr_init_1 (tree binfo, tree true_exp, tree exp, tree init, int flags,
}
/* List-initialization from {} becomes value-initialization for non-aggregate
classes with default constructors. Handle this here so protected access
works. */
if (init && TREE_CODE (init) == TREE_LIST)
classes with default constructors. Handle this here when we're
initializing a base, so protected access works. */
if (exp != true_exp && init && TREE_CODE (init) == TREE_LIST)
{
tree elt = TREE_VALUE (init);
if (DIRECT_LIST_INIT_P (elt)

15
gcc/testsuite/g++.dg/cpp0x/constexpr-list1.C Normal file
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@ -0,0 +1,15 @@
// PR c++/72457
// { dg-do compile { target c++11 } }
struct A {
int i;
constexpr A(): i(0) {}
};
struct B: A { };
struct C
{
B b;
constexpr C() : b{} {}
};