diff options
| -rw-r--r-- | gcc/cp/tree.c | 9 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/parse/pr101783.C | 5 |
2 files changed, 13 insertions, 1 deletions
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c index 3c62dd7..d67d785 100644 --- a/gcc/cp/tree.c +++ b/gcc/cp/tree.c @@ -1403,11 +1403,18 @@ cp_build_qualified_type_real (tree type, /* A reference or method type shall not be cv-qualified. [dcl.ref], [dcl.fct]. This used to be an error, but as of DR 295 (in CD1) we always ignore extra cv-quals on functions. */ + + /* [dcl.ref/1] Cv-qualified references are ill-formed except when + the cv-qualifiers are introduced through the use of a typedef-name + ([dcl.typedef], [temp.param]) or decltype-specifier + ([dcl.type.decltype]),in which case the cv-qualifiers are + ignored. */ if (type_quals & (TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE) && (TYPE_REF_P (type) || FUNC_OR_METHOD_TYPE_P (type))) { - if (TYPE_REF_P (type)) + if (TYPE_REF_P (type) + && (!typedef_variant_p (type) || FUNC_OR_METHOD_TYPE_P (type))) bad_quals |= type_quals & (TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE); type_quals &= ~(TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE); } diff --git a/gcc/testsuite/g++.dg/parse/pr101783.C b/gcc/testsuite/g++.dg/parse/pr101783.C new file mode 100644 index 0000000..4e0a435 --- /dev/null +++ b/gcc/testsuite/g++.dg/parse/pr101783.C @@ -0,0 +1,5 @@ +template<class T> struct A{ + typedef T& Type; +}; +template<class T> void f(const typename A<T>::Type){} +template <> void f<int>(const typename A<int>::Type){} |