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| author | Jakub Jelinek <jakub@redhat.com> | 2017-05-26 11:17:54 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2017-05-26 11:17:54 +0200 |
| commit | 6fc9f7aa731e895585c47d740509b5cd1591e797 (patch) | |
| tree | d6a31e869ca764436905f87f10676d248ddddf01 /gcc/cp/decl2.c | |
| parent | 28e0e05badfbdf7930bbd6f3051b07dd7ec37ae2 (diff) | |
| download | gcc-6fc9f7aa731e895585c47d740509b5cd1591e797.zip gcc-6fc9f7aa731e895585c47d740509b5cd1591e797.tar.gz gcc-6fc9f7aa731e895585c47d740509b5cd1591e797.tar.bz2 | |
cp-tree.h (struct lang_decl_decomp): New type.
* cp-tree.h (struct lang_decl_decomp): New type.
(struct lang_decl): Add u.decomp.
(LANG_DECL_DECOMP_CHECK): Define.
(DECL_DECOMPOSITION_P): Note it is set also on the vars
for user identifiers.
(DECL_DECOMP_BASE): Define.
(retrofit_lang_decl): Add extra int = 0 argument.
* lex.c (retrofit_lang_decl): Add SEL argument, if non-zero
use it to influence the selector choices and for selector
0 to non-zero transition copy old content.
(cxx_dup_lang_specific_decl): Handle DECL_DECOMPOSITION_P.
* decl.c (poplevel): For DECL_DECOMPOSITION_P, check
!DECL_DECOMP_BASE instead of !DECL_VALUE_EXPR. Adjust warning
wording if decl is a structured binding.
(cp_finish_decomp): Pass 4 as the new argument to retrofit_lang_decl.
Set DECL_DECOMP_BASE. Ignore DECL_READ_P sets from initialization
of individual variables for tuple structured bindings.
(grokdeclarator): Pass 4 as the new argument to retrofit_lang_decl.
Clear DECL_DECOMP_BASE.
* decl2.c (mark_used): Mark DECL_DECOMP_BASE TREE_USED as well.
* pt.c (tsubst_decomp_names): Assert DECL_DECOMP_BASE matches what
is expected.
* expr.c (mark_exp_read): Recurse on DECL_DECOMP_BASE instead of
DECL_VALUE_EXPR.
* g++.dg/cpp1z/decomp29.C (p): New variable.
(main): Add further tests.
From-SVN: r248483
Diffstat (limited to 'gcc/cp/decl2.c')
| -rw-r--r-- | gcc/cp/decl2.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/cp/decl2.c b/gcc/cp/decl2.c index 85310e0..73eeb01 100644 --- a/gcc/cp/decl2.c +++ b/gcc/cp/decl2.c @@ -5027,6 +5027,9 @@ mark_used (tree decl, tsubst_flags_t complain) /* Set TREE_USED for the benefit of -Wunused. */ TREE_USED (decl) = 1; + /* And for structured bindings also the underlying decl. */ + if (DECL_DECOMPOSITION_P (decl) && DECL_DECOMP_BASE (decl)) + TREE_USED (DECL_DECOMP_BASE (decl)) = 1; if (TREE_CODE (decl) == TEMPLATE_DECL) return true; |