We reject extended statement-expressions in template parameters, so we
might as well reject them in constant expressions used in noexcept
specifications.
Regstrapped on i686- and x86_64-linux-gnu. Ok to install?
for gcc/cp/ChangeLog
PR c++/84968
* tree.c (strip_typedefs_expr): Reject STATEMENT_LISTs.
for gcc/testsuite/ChangeLog
PR c++/84968
* g++.dg/eh/pr84968.C: New.
---
gcc/cp/tree.c | 4 ++++
gcc/testsuite/g++.dg/eh/pr84968.C | 15 +++++++++++++++
2 files changed, 19 insertions(+)
create mode 100644 gcc/testsuite/g++.dg/eh/pr84968.C
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index f1a90bdec0fc..070bd11a0591 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -1785,6 +1785,10 @@ strip_typedefs_expr (tree t, bool *remove_attributes)
error ("lambda-expression in a constant expression");
return error_mark_node;
+ case STATEMENT_LIST:
+ error ("statement-expression in a constant expression");
+ return error_mark_node;
+
default:
break;
}
diff --git a/gcc/testsuite/g++.dg/eh/pr84968.C
b/gcc/testsuite/g++.dg/eh/pr84968.C
new file mode 100644
index 000000000000..23c49f477a88
--- /dev/null
+++ b/gcc/testsuite/g++.dg/eh/pr84968.C
@@ -0,0 +1,15 @@
+// { dg-do compile { target c++11 } }
+
+// { dg-options "" }
+
+union b;
+
+struct S {
+ template <typename>
+ void a()
+ try {
+ } catch (int ()
+ noexcept (({ union b a; true; }))) // { dg-error "constant" }
+ {
+ }
+};
--
Alexandre Oliva, freedom fighter http://FSFLA.org/~lxoliva/
You must be the change you wish to see in the world. -- Gandhi
Be Free! -- http://FSFLA.org/ FSF Latin America board member
Free Software Evangelist|Red Hat Brasil GNU Toolchain Engineer
