On Dec 6, 2018, Alexandre Oliva <aol...@redhat.com> wrote: > I'm giving your proposed patch a full round of testing along with other > patches.
[PR86823] retain deferred access checks from outside firewall We used to preserve deferred access check along with resolved template ids, but a tentative parsing firewall introduced additional layers of deferred access checks, so that we don't preserve the checks we want to any more. This patch moves the deferred access checks from outside the firewall into it. Regstrapped on x86_64- and i686-linux-gnu. Ok to install? From: Jason Merrill <ja...@redhat.com> for gcc/cp/ChangeLog PR c++/86823 * parser.c (cp_parser_template_id): Rearrange deferred access checks into the firewall. From: Alexandre Oliva <aol...@redhat.com> for gcc/testsuite/ChangeLog PR c++/86823 * g++.dg/pr86823.C: New. --- gcc/cp/parser.c | 10 ++++++---- gcc/testsuite/g++.dg/pr86823.C | 15 +++++++++++++++ 2 files changed, 21 insertions(+), 4 deletions(-) create mode 100644 gcc/testsuite/g++.dg/pr86823.C diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c index adfe09e494dc..0bf0e309a588 100644 --- a/gcc/cp/parser.c +++ b/gcc/cp/parser.c @@ -16182,16 +16182,18 @@ cp_parser_template_id (cp_parser *parser, is_declaration, tag_type, &is_identifier); + + /* Push any access checks inside the firewall we're about to create. */ + vec<deferred_access_check, va_gc> *checks = get_deferred_access_checks (); + pop_deferring_access_checks (); if (templ == error_mark_node || is_identifier) - { - pop_deferring_access_checks (); - return templ; - } + return templ; /* Since we're going to preserve any side-effects from this parse, set up a firewall to protect our callers from cp_parser_commit_to_tentative_parse in the template arguments. */ tentative_firewall firewall (parser); + reopen_deferring_access_checks (checks); /* If we find the sequence `[:' after a template-name, it's probably a digraph-typo for `< ::'. Substitute the tokens and check if we can diff --git a/gcc/testsuite/g++.dg/pr86823.C b/gcc/testsuite/g++.dg/pr86823.C new file mode 100644 index 000000000000..18914b00aa8d --- /dev/null +++ b/gcc/testsuite/g++.dg/pr86823.C @@ -0,0 +1,15 @@ +// { dg-do compile } + +struct X { +private: + template<typename T> + struct Y { + int data; + }; +public: + int value; +}; + +int main() { + typename X::Y<int> a; // { dg-error "private" } +} -- Alexandre Oliva, freedom fighter https://FSFLA.org/blogs/lxo Be the change, be Free! FSF Latin America board member GNU Toolchain Engineer Free Software Evangelist Hay que enGNUrecerse, pero sin perder la terGNUra jamás-GNUChe