Richard Biener <rguent...@suse.de> writes:
> 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
I didn't have bootstrap issues myself but I only tried my usual x86_64, not
other targets (which I test less often). But the patch regtests fine for me.
Thanks.
> 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)
> { }
