diff options
| author | Jason Merrill <jason@redhat.com> | 2018-03-09 22:34:29 -0500 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2018-03-09 22:34:29 -0500 |
| commit | 732a431dc94ae7f921e21245061946a1cfe8d9b5 (patch) | |
| tree | 1866e13a3177da4bb55afe89ddb225577eb96483 | |
| parent | 3569f81f2ddc25b1ea22c99230c3e35032bd4752 (diff) | |
| download | gcc-732a431dc94ae7f921e21245061946a1cfe8d9b5.zip gcc-732a431dc94ae7f921e21245061946a1cfe8d9b5.tar.gz gcc-732a431dc94ae7f921e21245061946a1cfe8d9b5.tar.bz2 | |
PR c++/84785 - ICE with alias template and default targs.
* pt.c (type_unification_real): Set processing_template_decl if
saw_undeduced == 1.
From-SVN: r258407
| -rw-r--r-- | gcc/cp/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/cp/pt.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/cpp0x/alias-decl-63.C | 18 |
3 files changed, 28 insertions, 0 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index 05cfb76..95ed64d 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,5 +1,9 @@ 2018-03-09 Jason Merrill <jason@redhat.com> + PR c++/84785 - ICE with alias template and default targs. + * pt.c (type_unification_real): Set processing_template_decl if + saw_undeduced == 1. + PR c++/84752 - ICE with capture of constexpr array. * call.c (standard_conversion): Set rvaluedness_matches_p on the identity conversion under ck_lvalue. diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c index bc815d2..d91e8bb 100644 --- a/gcc/cp/pt.c +++ b/gcc/cp/pt.c @@ -19977,7 +19977,13 @@ type_unification_real (tree tparms, location_t save_loc = input_location; if (DECL_P (parm)) input_location = DECL_SOURCE_LOCATION (parm); + + if (saw_undeduced == 1) + ++processing_template_decl; arg = tsubst_template_arg (arg, full_targs, fcomplain, NULL_TREE); + if (saw_undeduced == 1) + --processing_template_decl; + if (arg != error_mark_node && !uses_template_parms (arg)) arg = convert_template_argument (parm, arg, full_targs, complain, i, NULL_TREE); diff --git a/gcc/testsuite/g++.dg/cpp0x/alias-decl-63.C b/gcc/testsuite/g++.dg/cpp0x/alias-decl-63.C new file mode 100644 index 0000000..04fb42d --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp0x/alias-decl-63.C @@ -0,0 +1,18 @@ +// PR c++/84785 +// { dg-do compile { target c++11 } } + +template <typename> struct A; +template <bool> struct B; +template <bool B, typename> using enable_if_t = typename B<B>::type; +template <long> using type_pack_element = int; +struct variant { + variant() {} + template <typename Arg, long I = Arg::type::value, + typename = type_pack_element<I>, enable_if_t<A<Arg>::value, int>> + variant(Arg &&); +}; + +struct S { + variant var; +}; +int main() { S s; } |