diff options
Diffstat (limited to 'gcc/cp/pt.c')
| -rw-r--r-- | gcc/cp/pt.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c index 5b12aa6..bc23e9e 100644 --- a/gcc/cp/pt.c +++ b/gcc/cp/pt.c @@ -25811,7 +25811,16 @@ invalid_nontype_parm_type_p (tree type, tsubst_flags_t complain) else if (TYPE_PTRMEM_P (type)) return false; else if (TREE_CODE (type) == TEMPLATE_TYPE_PARM) - return false; + { + if (CLASS_PLACEHOLDER_TEMPLATE (type) && cxx_dialect < cxx2a) + { + if (complain & tf_error) + error ("non-type template parameters of deduced class type only " + "available with %<-std=c++2a%> or %<-std=gnu++2a%>"); + return true; + } + return false; + } else if (TREE_CODE (type) == TYPENAME_TYPE) return false; else if (TREE_CODE (type) == DECLTYPE_TYPE) |