* cp/parser.c (cp_parser_lambda_expression): Save/reset/restore
auto_is_implicit_function_template_parm_p around lambda body.
* g++.dg/cpp1y/pr59629.C: New testcase.
---
gcc/cp/parser.c | 5 +++++
gcc/testsuite/g++.dg/cpp1y/pr59629.C | 7 +++++++
2 files changed, 12 insertions(+)
create mode 100644 gcc/testsuite/g++.dg/cpp1y/pr59629.C
diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 4f737df..0e013b9 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -8740,6 +8740,8 @@ cp_parser_lambda_expression (cp_parser* parser)
= parser->fully_implicit_function_template_p;
tree implicit_template_parms = parser->implicit_template_parms;
cp_binding_level* implicit_template_scope =
parser->implicit_template_scope;
+ bool auto_is_implicit_function_template_parm_p
+ = parser->auto_is_implicit_function_template_parm_p;
parser->num_template_parameter_lists = 0;
parser->in_statement = 0;
@@ -8747,6 +8749,7 @@ cp_parser_lambda_expression (cp_parser* parser)
parser->fully_implicit_function_template_p = false;
parser->implicit_template_parms = 0;
parser->implicit_template_scope = 0;
+ parser->auto_is_implicit_function_template_parm_p = false;
/* By virtue of defining a local class, a lambda expression has access to
the private variables of enclosing classes. */
@@ -8774,6 +8777,8 @@ cp_parser_lambda_expression (cp_parser* parser)
= fully_implicit_function_template_p;
parser->implicit_template_parms = implicit_template_parms;
parser->implicit_template_scope = implicit_template_scope;
+ parser->auto_is_implicit_function_template_parm_p
+ = auto_is_implicit_function_template_parm_p;
}
pop_deferring_access_checks ();
diff --git a/gcc/testsuite/g++.dg/cpp1y/pr59629.C
b/gcc/testsuite/g++.dg/cpp1y/pr59629.C
new file mode 100644
index 0000000..a0c9209
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp1y/pr59629.C
@@ -0,0 +1,7 @@
+// { dg-do compile }
+// { dg-options "-std=c++1y" }
+
+// PR c++/59629
+
+void foo(int i = []{ auto 0; }()); // { dg-error "expected|could not convert" }
+
--
1.8.5.2
