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PR c++/70709 - zero-length array member 

* class.c (walk_subobject_offsets): Handle 0-length array.

From-SVN: r238687
This commit is contained in:
Jason Merrill 2016-07-23 22:52:33 -04:00 committed by Jason Merrill
parent 71b3723abb
commit 2dac37c091
3 changed files with 24 additions and 1 deletions
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3
gcc/cp/ChangeLog
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@ -1,5 +1,8 @@
2016-07-23 Jason Merrill <jason@redhat.com> 2016-07-23 Jason Merrill <jason@redhat.com>
PR c++/70709
* class.c (walk_subobject_offsets): Handle 0-length array.
PR c++/70778 PR c++/70778
* pt.c (tsubst): Also substitute into the template of a * pt.c (tsubst): Also substitute into the template of a
BOUND_TEMPLATE_TEMPLATE_PARM. BOUND_TEMPLATE_TEMPLATE_PARM.

3
gcc/cp/class.c
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@ -4175,7 +4175,8 @@ walk_subobject_offsets (tree type,
/* Avoid recursing into objects that are not interesting. */ /* Avoid recursing into objects that are not interesting. */
if (!CLASS_TYPE_P (element_type) if (!CLASS_TYPE_P (element_type)
|| !CLASSTYPE_CONTAINS_EMPTY_CLASS_P (element_type) || !CLASSTYPE_CONTAINS_EMPTY_CLASS_P (element_type)
|| !domain) || !domain
|| integer_minus_onep (TYPE_MAX_VALUE (domain)))
return 0; return 0;
/* Step through each of the elements in the array. */ /* Step through each of the elements in the array. */

19
gcc/testsuite/g++.dg/ext/array3.C Normal file
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@ -0,0 +1,19 @@
// PR c++/70709
// { dg-options "" }
struct A
{
A (int);
};
struct B
{
B () {}
A a[0];
};
struct C
{
C () {}
B a[0];
};