diff options
Diffstat (limited to 'gcc/cp/call.c')
| -rw-r--r-- | gcc/cp/call.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/gcc/cp/call.c b/gcc/cp/call.c index 012134fd47a..5145e438460 100644 --- a/gcc/cp/call.c +++ b/gcc/cp/call.c @@ -7144,7 +7144,7 @@ convert_arg_to_ellipsis (tree arg, tsubst_flags_t complain) "passing objects of non-trivially-copyable " "type %q#T through %<...%> is conditionally supported", arg_type); - return cp_build_addr_expr (arg, complain); + return build1 (ADDR_EXPR, build_reference_type (arg_type), arg); } /* Build up a real lvalue-to-rvalue conversion in case the copy constructor is trivial but not callable. */ @@ -7568,6 +7568,10 @@ build_over_call (struct z_candidate *cand, int flags, tsubst_flags_t complain) if (undeduced_auto_decl (fn)) mark_used (fn, complain); + else + /* Otherwise set TREE_USED for the benefit of -Wunused-function. + See PR80598. */ + TREE_USED (fn) = 1; return_type = TREE_TYPE (TREE_TYPE (fn)); nargs = vec_safe_length (args); @@ -7931,7 +7935,15 @@ build_over_call (struct z_candidate *cand, int flags, tsubst_flags_t complain) tree *fargs = (!nargs ? argarray : (tree *) alloca (nargs * sizeof (tree))); for (j = 0; j < nargs; j++) - fargs[j] = maybe_constant_value (argarray[j]); + { + /* For -Wformat undo the implicit passing by hidden reference + done by convert_arg_to_ellipsis. */ + if (TREE_CODE (argarray[j]) == ADDR_EXPR + && TREE_CODE (TREE_TYPE (argarray[j])) == REFERENCE_TYPE) + fargs[j] = TREE_OPERAND (argarray[j], 0); + else + fargs[j] = maybe_constant_value (argarray[j]); + } warned_p = check_function_arguments (input_location, fn, TREE_TYPE (fn), nargs, fargs); |