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authorJason Merrill <jason@redhat.com>2017-08-29 15:40:55 -0400
committerJason Merrill <jason@gcc.gnu.org>2017-08-29 15:40:55 -0400
commit1a9de5b6b56a726313069f4447fbbbee469e99dc (patch)
tree250e589eb24f60c22a8e42d2d51f5d1105992b63 /gcc/cp/call.c
parentb3eae0dd176c15cf4b358ae5d93d7c3144d253fc (diff)
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PR c++/80767 - unnecessary instantiation of generic lambda
* call.c (convert_like_real): Call build_user_type_conversion_1 if cand is null. (add_conv_candidate): Build a ck_user conversion with no candidate. From-SVN: r251427
Diffstat (limited to 'gcc/cp/call.c')
-rw-r--r--gcc/cp/call.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/gcc/cp/call.c b/gcc/cp/call.c
index cfedd30..f7f9297 100644
--- a/gcc/cp/call.c
+++ b/gcc/cp/call.c
@@ -2278,8 +2278,10 @@ add_conv_candidate (struct z_candidate **candidates, tree fn, tree obj,
if (i == 0)
{
- t = implicit_conversion (totype, argtype, arg, /*c_cast_p=*/false,
- flags, complain);
+ t = build_identity_conv (argtype, NULL_TREE);
+ t = build_conv (ck_user, totype, t);
+ /* Leave the 'cand' field null; we'll figure out the conversion in
+ convert_like_real if this candidate is chosen. */
convert_type = totype;
}
else if (parmnode == void_list_node)
@@ -6692,6 +6694,13 @@ convert_like_real (conversion *convs, tree expr, tree fn, int argnum,
case ck_user:
{
struct z_candidate *cand = convs->cand;
+
+ if (cand == NULL)
+ /* We chose the surrogate function from add_conv_candidate, now we
+ actually need to build the conversion. */
+ cand = build_user_type_conversion_1 (totype, expr,
+ LOOKUP_NO_CONVERSION, complain);
+
tree convfn = cand->fn;
/* When converting from an init list we consider explicit