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re PR c++/56774 (G++ 4.8 reverses variadic template types during unpacking)

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PR c++/56774
	PR c++/35722
	* pt.c (unify_pack_expansion): Fix indexing.

From-SVN: r197244
This commit is contained in:
Jason Merrill 2013-03-29 14:59:09 -04:00 • committed by Jason Merrill
parent 0208f7dab0
commit 4185fb7350
3 changed files with 22 additions and 2 deletions
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6
gcc/cp/ChangeLog
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@ -1,3 +1,9 @@
2013-03-29 Jason Merrill <jason@redhat.com>
PR c++/56774
PR c++/35722
* pt.c (unify_pack_expansion): Fix indexing.
2013-03-29 Gabriel Dos Reis <gdr@integrable-solutions.net>
* call.c (build_java_interface_fn_ref): Likewise.

4
gcc/cp/pt.c
View file

@ -16213,10 +16213,10 @@ unify_pack_expansion (tree tparms, tree targs, tree packed_parms,
arg = NULL_TREE;
if (TREE_VALUE (pack)
&& (pargs = ARGUMENT_PACK_EXPLICIT_ARGS (TREE_VALUE (pack)))
&& (i < TREE_VEC_LENGTH (pargs)))
&& (i - start < TREE_VEC_LENGTH (pargs)))
{
any_explicit = true;
arg = TREE_VEC_ELT (pargs, i);
arg = TREE_VEC_ELT (pargs, i - start);
}
TMPL_ARG (targs, level, idx) = arg;
}

14
gcc/testsuite/g++.dg/cpp0x/variadic-explicit2.C Normal file
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@ -0,0 +1,14 @@
// PR c++/56774
// { dg-require-effective-target c++11 }
template <class ... Args>
struct mytype {};
template <class T, class ... Args>
void something( mytype<T, Args...> )
{ }
int main()
{
something<int, char, bool>( mytype<int, char, bool>() );
}