Bootstrapped/regtested on x86_64-pc-linux-gnu, ok for trunk and branches?
-- >8 --
is_really_empty_class is liable to crash when it gets an incomplete
or dependent type. Since r11-557, we pass the yet-uninstantiated
class type S<0> of the PARM_DECL s to is_really_empty_class -- because
of the potential_rvalue_constant_expression -> is_rvalue_constant_expression
change in cp_parser_constant_expression. Here we're not parsing
a template so we did not check COMPLETE_TYPE_P as we should.
PR c++/110106
gcc/cp/ChangeLog:
* constexpr.cc (potential_constant_expression_1): Check COMPLETE_TYPE_P
even when !processing_template_decl.
gcc/testsuite/ChangeLog:
* g++.dg/cpp0x/noexcept80.C: New test.
---
gcc/cp/constexpr.cc | 2 +-
gcc/testsuite/g++.dg/cpp0x/noexcept80.C | 12 ++++++++++++
2 files changed, 13 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/g++.dg/cpp0x/noexcept80.C
diff --git a/gcc/cp/constexpr.cc b/gcc/cp/constexpr.cc
index 6e8f1c2b61e..1f59c5472fb 100644
--- a/gcc/cp/constexpr.cc
+++ b/gcc/cp/constexpr.cc
@@ -9116,7 +9116,7 @@ potential_constant_expression_1 (tree t, bool want_rval,
bool strict, bool now,
if (now && want_rval)
{
tree type = TREE_TYPE (t);
- if ((processing_template_decl && !COMPLETE_TYPE_P (type))
+ if (!COMPLETE_TYPE_P (type)
|| dependent_type_p (type)
|| is_really_empty_class (type, /*ignore_vptr*/false))
/* An empty class has no data to read. */
diff --git a/gcc/testsuite/g++.dg/cpp0x/noexcept80.C
b/gcc/testsuite/g++.dg/cpp0x/noexcept80.C
new file mode 100644
index 00000000000..3e90af747e2
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/noexcept80.C
@@ -0,0 +1,12 @@
+// PR c++/110106
+// { dg-do compile { target c++11 } }
+
+template<int> struct S
+{
+};
+
+struct G {
+ G(S<0>);
+};
+
+void y(S<0> s) noexcept(noexcept(G{s}));
base-commit: fca089e8a47314a40ad93527ba9f9d0d374b3afb
--
2.41.0
