[DTrace-devel] [PATCH 3/5] test: preprocessor: work on GCC 16

[Kris Van Hees]

On Mon, Oct 06, 2025 at 04:28:26PM +0100, Nick Alcock wrote:
> GCC commit c397a8c12296b75a91ae51e4889debf023e6c338 ("libcpp, genmatch:
> Use gcc_diag instead of printf for libcpp diagnostics") made libcpp
> quote identifiers and tokens in diagnostics like the rest of GCC does.
> We have several tests that rely on the old error formatting: sed away
> quotes and smartquotes into quotes or nothing (as appropriate to match
> older GCCs), until such time as GCC 15 is obsolete (a long long time
> away).
> 
> Signed-off-by: Nick Alcock <nick.alcock at oracle.com>

Reviewed-by: Kris Van Hees <kris.van.hees at oracle.com>

> ---
>  test/unittest/preprocessor/err.defincomp.r.p   | 1 +
>  test/unittest/preprocessor/err.ifdefincomp.r.p | 4 ++++
>  test/unittest/preprocessor/err.incompelse.r.p  | 4 ++++
>  test/unittest/preprocessor/err.mulelse.r.p     | 1 +
>  4 files changed, 10 insertions(+)
>  create mode 120000 test/unittest/preprocessor/err.defincomp.r.p
>  create mode 100755 test/unittest/preprocessor/err.ifdefincomp.r.p
>  create mode 100755 test/unittest/preprocessor/err.incompelse.r.p
>  create mode 120000 test/unittest/preprocessor/err.mulelse.r.p
> 
> diff --git a/test/unittest/preprocessor/err.defincomp.r.p b/test/unittest/preprocessor/err.defincomp.r.p
> new file mode 120000
> index 0000000000000..62577fe0b6bbd
> --- /dev/null
> +++ b/test/unittest/preprocessor/err.defincomp.r.p
> @@ -0,0 +1 @@
> +err.incompelse.r.p
> \ No newline at end of file
> diff --git a/test/unittest/preprocessor/err.ifdefincomp.r.p b/test/unittest/preprocessor/err.ifdefincomp.r.p
> new file mode 100755
> index 0000000000000..7629ac5973957
> --- /dev/null
> +++ b/test/unittest/preprocessor/err.ifdefincomp.r.p
> @@ -0,0 +1,4 @@
> +#!/usr/bin/sed -f
> +# GCC 16 improved diagnostics formatting.  Until GCC 16 is the minimum
> +# supported, we have to sed it back again.
> +s,[??????],",g
> diff --git a/test/unittest/preprocessor/err.incompelse.r.p b/test/unittest/preprocessor/err.incompelse.r.p
> new file mode 100755
> index 0000000000000..ae9a6833d106d
> --- /dev/null
> +++ b/test/unittest/preprocessor/err.incompelse.r.p
> @@ -0,0 +1,4 @@
> +#!/usr/bin/sed -f
> +# GCC 16 improved diagnostics formatting.  Until GCC 16 is the minimum
> +# supported, we have to sed it back again.
> +s,[??????],,g
> diff --git a/test/unittest/preprocessor/err.mulelse.r.p b/test/unittest/preprocessor/err.mulelse.r.p
> new file mode 120000
> index 0000000000000..62577fe0b6bbd
> --- /dev/null
> +++ b/test/unittest/preprocessor/err.mulelse.r.p
> @@ -0,0 +1 @@
> +err.incompelse.r.p
> \ No newline at end of file
> -- 
> 2.51.0.284.g117bcb8de7
>