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re PR c++/84540 (ICE with alignas in variadic template)

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/cp
2018-02-26  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84540
	* pt.c (tsubst_attributes): Handle correctly tsubst_attribute
	returning NULL_TREE.
	(apply_late_template_attributes): Likewise.

/testsuite
2018-02-26  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84540
	* g++.dg/cpp0x/alignas14.C: New.
	* g++.dg/cpp0x/alignas15.C: Likewise.

From-SVN: r258012
This commit is contained in:
Paolo Carlini 2018-02-26 20:06:40 +00:00 • committed by Paolo Carlini
parent 2bb03eb72f
commit 08735f538c
5 changed files with 27 additions and 4 deletions
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7
gcc/cp/ChangeLog
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@ -1,3 +1,10 @@
2018-02-26 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84540
* pt.c (tsubst_attributes): Handle correctly tsubst_attribute
returning NULL_TREE.
(apply_late_template_attributes): Likewise.
2018-02-26 Jakub Jelinek <jakub@redhat.com>
PR c++/84557

6
gcc/cp/pt.c
View file

@ -10245,9 +10245,8 @@ tsubst_attributes (tree attributes, tree args,
if (subst != t)
{
*p = subst;
do
while (*p)
p = &TREE_CHAIN (*p);
while (*p);
*p = TREE_CHAIN (t);
continue;
}
@ -10314,9 +10313,8 @@ apply_late_template_attributes (tree *decl_p, tree attributes, int attr_flags,
*p = TREE_CHAIN (t);
TREE_CHAIN (t) = NULL_TREE;
*q = tsubst_attribute (t, decl_p, args, complain, in_decl);
do
while (*q)
q = &TREE_CHAIN (*q);
while (*q);
}
else
p = &TREE_CHAIN (t);

6
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,9 @@
2018-02-26 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84540
* g++.dg/cpp0x/alignas14.C: New.
* g++.dg/cpp0x/alignas15.C: Likewise.
2018-02-26 Jakub Jelinek <jakub@redhat.com>
PR c++/84557

6
gcc/testsuite/g++.dg/cpp0x/alignas14.C Normal file
View file

@ -0,0 +1,6 @@
// PR c++/84540
// { dg-do compile { target c++11 } }
template<typename... T> struct alignas(alignof(T)...) A {};
A<> a;

6
gcc/testsuite/g++.dg/cpp0x/alignas15.C Normal file
View file

@ -0,0 +1,6 @@
// PR c++/84540
// { dg-do compile { target c++11 } }
template<typename... T> struct A { enum alignas(alignof(T)...) E {}; };
A<> a;