With no longer visiting TREE_CHAIN for decls we have to visit
the DECL_ARGUMENT chain manually.
LTO bootstrap and regtest running on x86_64-unknown-linux-gnu.
I'm not sure whether LTO bootstrap worked before, but hopefully this
would have fixed it. Testing non-LTO to be able to push it anyway as
well.
Richard.
PR lto/121935
* ipa-free-lang-data.cc (find_decls_types_r): Visit DECL_ARGUMENTS
chain manually.
* g++.dg/lto/pr121935_0.C: New testcase.
---
gcc/ipa-free-lang-data.cc | 3 ++-
gcc/testsuite/g++.dg/lto/pr121935_0.C | 13 +++++++++++++
2 files changed, 15 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/g++.dg/lto/pr121935_0.C
diff --git a/gcc/ipa-free-lang-data.cc b/gcc/ipa-free-lang-data.cc
index 41afc6ec82f..8196cab6079 100644
--- a/gcc/ipa-free-lang-data.cc
+++ b/gcc/ipa-free-lang-data.cc
@@ -735,7 +735,8 @@ find_decls_types_r (tree *tp, int *ws, void *data)
if (TREE_CODE (t) == FUNCTION_DECL)
{
- fld_worklist_push (DECL_ARGUMENTS (t), fld);
+ for (tree arg = DECL_ARGUMENTS (t); arg; arg = DECL_CHAIN (arg))
+ fld_worklist_push (arg, fld);
fld_worklist_push (DECL_RESULT (t), fld);
}
else if (TREE_CODE (t) == FIELD_DECL)
diff --git a/gcc/testsuite/g++.dg/lto/pr121935_0.C
b/gcc/testsuite/g++.dg/lto/pr121935_0.C
new file mode 100644
index 00000000000..a4519b1d3ad
--- /dev/null
+++ b/gcc/testsuite/g++.dg/lto/pr121935_0.C
@@ -0,0 +1,13 @@
+// { dg-lto-do assemble }
+// { dg-lto-options {{-flto -Wno-return-type}} }
+
+struct a {
+ static int b;
+};
+template <int> struct c {
+ struct d {
+ d e(unsigned, unsigned, bool, bool, bool, unsigned, a);
+ };
+};
+template <>
+c<2>::d c<2>::d::e(unsigned, unsigned, bool, bool, bool, unsigned, const a) { }
--
2.51.0
