dev-debug/rr: fix build w/ glibc-2.42

Signed-off-by: Sam James <sam@gentoo.org>

dev-debug/rr/files/rr-5.9.0-glibc-2.42-termio.patch

@@ -0,0 +1,20 @@
+https://github.com/rr-debugger/rr/commit/6251648873b9e1ed23536beebbaa5d6fead3d5be
+
+From 6251648873b9e1ed23536beebbaa5d6fead3d5be Mon Sep 17 00:00:00 2001
+From: Robert O'Callahan <robert@ocallahan.org>
+Date: Tue, 29 Jul 2025 23:05:21 +1200
+Subject: [PATCH] Stop checking struct sizes against glibc `termio` since that
+ has been removed.
+
+Resolves #3995.
+--- a/src/kernel_abi.h
++++ b/src/kernel_abi.h
+@@ -750,7 +750,6 @@ struct BaseArch : public wordsize,
+     unsigned char c_line;
+     unsigned char c_cc[8];
+   };
+-  RR_VERIFY_TYPE(termio);
+ 
+   struct seccomp_notif_sizes {
+     uint16_t seccomp_notif;
+

dev-debug/rr/rr-5.9.0-r1.ebuild

@@ -54,6 +54,7 @@ RESTRICT="test" # toolchain and kernel version dependent
 PATCHES=(
 	"${FILESDIR}"/${PN}-5.7.0-no-force-lto.patch
 	"${FILESDIR}"/${PN}-5.9.0-zen-workaround-service.patch
+	"${FILESDIR}"/${PN}-5.9.0-glibc-2.42-termio.patch
 )
 
 pkg_setup() {