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| author | Patrick Palka <ppalka@redhat.com> | 2020-04-24 21:16:59 -0400 |
|---|---|---|
| committer | Patrick Palka <ppalka@redhat.com> | 2020-04-24 21:16:59 -0400 |
| commit | 5e7e8b98f49eda9ffb9817d97975a211c87c5a53 (patch) | |
| tree | 1f66407215327fc43c4a91aed1623e9ef015abf4 | |
| parent | 018730326d878d98b85b1256ff220e76665ed97e (diff) | |
| download | gcc-5e7e8b98f49eda9ffb9817d97975a211c87c5a53.zip gcc-5e7e8b98f49eda9ffb9817d97975a211c87c5a53.tar.gz gcc-5e7e8b98f49eda9ffb9817d97975a211c87c5a53.tar.bz2 | |
c++: add "'requires' only available with ..." note
This adds a note suggesting to enable concepts whenever 'requires' is parsed as
an invalid type name with concepts disabled.
gcc/cp/ChangeLog:
* parser.c (cp_parser_diagnose_invalid_type_name): Suggest enabling
concepts if the invalid identifier is 'requires'.
gcc/testsuite/ChangeLog:
* g++.dg/concepts/diagnostic11.C: New test.
| -rw-r--r-- | gcc/cp/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/cp/parser.c | 3 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/concepts/diagnostic11.C | 6 |
4 files changed, 18 insertions, 0 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index 5b9ff5a..2a5b417 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,3 +1,8 @@ +2020-04-25 Patrick Palka <ppalka@redhat.com> + + * parser.c (cp_parser_diagnose_invalid_type_name): Suggest enabling + concepts if the invalid identifier is 'requires'. + 2020-04-25 Jakub Jelinek <jakub@redhat.com> PR c++/94742 diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c index d2f3f85..e1f9786 100644 --- a/gcc/cp/parser.c +++ b/gcc/cp/parser.c @@ -3378,6 +3378,9 @@ cp_parser_diagnose_invalid_type_name (cp_parser *parser, tree id, else if (!flag_concepts && id == ridpointers[(int)RID_CONCEPT]) inform (location, "%<concept%> only available with %<-std=c++2a%> or " "%<-fconcepts%>"); + else if (!flag_concepts && id == ridpointers[(int)RID_REQUIRES]) + inform (location, "%<requires%> only available with %<-std=c++2a%> or " + "%<-fconcepts%>"); else if (processing_template_decl && current_class_type && TYPE_BINFO (current_class_type)) { diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index b9be668..efbfe99 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2020-04-25 Patrick Palka <ppalka@redhat.com> + + * g++.dg/concepts/diagnostic11.C: New test. + 2020-04-25 Jakub Jelinek <jakub@redhat.com> PR c++/94742 diff --git a/gcc/testsuite/g++.dg/concepts/diagnostic11.C b/gcc/testsuite/g++.dg/concepts/diagnostic11.C new file mode 100644 index 0000000..7c60912 --- /dev/null +++ b/gcc/testsuite/g++.dg/concepts/diagnostic11.C @@ -0,0 +1,6 @@ +// { dg-do compile { target c++17_only } } + +template <bool B> + requires B // { dg-error ".requires. does not name a type" } +// { dg-message ".requires. only available with" "" { target *-*-* } .-1 } +void foo() { } |