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| author | Marek Polacek <polacek@redhat.com> | 2019-09-10 02:29:13 +0000 |
|---|---|---|
| committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2019-09-10 02:29:13 +0000 |
| commit | 77df40e8127ec4f62c01c15f2d6f76d995424863 (patch) | |
| tree | 822ee69b10dda22574ed61f738c3de26535abdc0 /gcc/cp/decl.c | |
| parent | fa412b7c52a8e023a16f853cc7f7efc7265b81ef (diff) | |
| download | gcc-77df40e8127ec4f62c01c15f2d6f76d995424863.zip gcc-77df40e8127ec4f62c01c15f2d6f76d995424863.tar.gz gcc-77df40e8127ec4f62c01c15f2d6f76d995424863.tar.bz2 | |
PR c++/84374 - diagnose invalid uses of decltype(auto).
* decl.c (grokdeclarator): Diagnose wrong usage of decltype(auto) in
a function declaration.
* g++.dg/cpp1y/auto-fn57.C: New test.
From-SVN: r275557
Diffstat (limited to 'gcc/cp/decl.c')
| -rw-r--r-- | gcc/cp/decl.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c index 88e2c3b..dfcd7b1 100644 --- a/gcc/cp/decl.c +++ b/gcc/cp/decl.c @@ -11681,6 +11681,16 @@ grokdeclarator (const cp_declarator *declarator, "allowed"); return error_mark_node; } + /* Only plain decltype(auto) is allowed. */ + if (tree a = type_uses_auto (type)) + { + if (AUTO_IS_DECLTYPE (a) && a != type) + { + error_at (typespec_loc, "%qT as type rather than " + "plain %<decltype(auto)%>", type); + return error_mark_node; + } + } if (ctype == NULL_TREE && decl_context == FIELD |