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| author | Jason Merrill <jason@redhat.com> | 2025-01-28 17:46:59 -0500 |
|---|---|---|
| committer | Jason Merrill <jason@redhat.com> | 2025-04-17 13:18:44 -0400 |
| commit | 47b62be9cace0e2e124650f331788d52ffd5fb25 (patch) | |
| tree | 573f0fe5c81c8b9568d1182f0b4a6bcc0b0aaeda /gcc | |
| parent | 7c47badcdc8625ea53aed275be96c32bc78db25b (diff) | |
| download | gcc-47b62be9cace0e2e124650f331788d52ffd5fb25.zip gcc-47b62be9cace0e2e124650f331788d52ffd5fb25.tar.gz gcc-47b62be9cace0e2e124650f331788d52ffd5fb25.tar.bz2 | |
c++: 'requires' diagnostic before C++20
We were giving a generic "not declared" error for a requires-expression
without concepts enabled; we can do better.
gcc/cp/ChangeLog:
* lex.cc (unqualified_name_lookup_error): Handle 'requires' better.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cp/lex.cc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/cp/lex.cc b/gcc/cp/lex.cc index c12b084..12af81e 100644 --- a/gcc/cp/lex.cc +++ b/gcc/cp/lex.cc @@ -749,6 +749,9 @@ unqualified_name_lookup_error (tree name, location_t loc) if (IDENTIFIER_ANY_OP_P (name)) error_at (loc, "%qD not defined", name); + else if (!flag_concepts && name == ridpointers[(int)RID_REQUIRES]) + error_at (loc, "%<requires%> only available with %<-std=c++20%> or " + "%<-fconcepts%>"); else { if (!objc_diagnose_private_ivar (name)) |