diff options
| author | Jason Merrill <jason@redhat.com> | 2018-01-17 12:44:35 -0500 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2018-01-17 12:44:35 -0500 |
| commit | 2625472ffa519e2c544cd9c181ac19cb9724b430 (patch) | |
| tree | c35736a1e864c369e79023b66b62101883fdf8fd | |
| parent | 824721f0905478ebc39e6a295cc8e95c22fa9d17 (diff) | |
| download | gcc-2625472ffa519e2c544cd9c181ac19cb9724b430.zip gcc-2625472ffa519e2c544cd9c181ac19cb9724b430.tar.gz gcc-2625472ffa519e2c544cd9c181ac19cb9724b430.tar.bz2 | |
PR c++/81843 - ICE with variadic member template.
PR c++/72801
* pt.c (unify_pack_expansion): Don't try to deduce enclosing
template args.
From-SVN: r256802
| -rw-r--r-- | gcc/cp/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/cp/pt.c | 3 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/cpp0x/variadic171.C | 12 |
3 files changed, 22 insertions, 0 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index ed44be7..ff09fe3 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,3 +1,10 @@ +2018-01-17 Jason Merrill <jason@redhat.com> + + PR c++/81843 - ICE with variadic member template. + PR c++/72801 + * pt.c (unify_pack_expansion): Don't try to deduce enclosing + template args. + 2018-01-17 David Malcolm <dmalcolm@redhat.com> PR c++/83799 diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c index 85997e2..3d7d458 100644 --- a/gcc/cp/pt.c +++ b/gcc/cp/pt.c @@ -20370,6 +20370,7 @@ unify_pack_expansion (tree tparms, tree targs, tree packed_parms, /* Add in any args remembered from an earlier partial instantiation. */ targs = add_to_template_args (PACK_EXPANSION_EXTRA_ARGS (parm), targs); + int levels = TMPL_ARGS_DEPTH (targs); packed_args = expand_template_argument_pack (packed_args); @@ -20385,6 +20386,8 @@ unify_pack_expansion (tree tparms, tree targs, tree packed_parms, /* Determine the index and level of this parameter pack. */ template_parm_level_and_index (parm_pack, &level, &idx); + if (level < levels) + continue; /* Keep track of the parameter packs and their corresponding argument packs. */ diff --git a/gcc/testsuite/g++.dg/cpp0x/variadic171.C b/gcc/testsuite/g++.dg/cpp0x/variadic171.C new file mode 100644 index 0000000..1e26814 --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp0x/variadic171.C @@ -0,0 +1,12 @@ +// PR c++/81843 +// { dg-do compile { target c++11 } } + +template < typename > struct A; +template < typename, typename > struct B; +template < typename ... S > struct C +{ + template < typename > struct D {}; + template < typename ... T > struct D < A < B < S, T > ... > >; +}; + +C <>::D < A < B < int, int > > > c; |