From 259d5c6ef7ca0b7fb07acf97538fa7ba590c8e8b Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Wed, 29 Apr 2026 11:14:03 +0200
Subject: [PATCH] libsanitizer: Fix up build against latest kernel headers

The Linux kernel recently removed the linux/scc.h header, so gcc (both
16.1-rc2 and trunk) fails to build e.g. on Fedora rawhide now.

The following patch cherry picks a recent upstream fix for this, the macros
defined in that header haven't been really used since 2013-ish.

2026-04-29  Jakub Jelinek  <jakub@redhat.com>

	* sanitizer_common/sanitizer_platform_limits_posix.cpp: Cherry picked
	from LLVM commit 3dc4fd6dd41100f051a63642f449b16324389c96.

Reviewed-by: Richard Biener <rguenth@suse.de>
---
 .../sanitizer_platform_limits_posix.cpp       | 21 ++++++++-----------
 1 file changed, 9 insertions(+), 12 deletions(-)

diff --git a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp
index 5872e3396f0..47eb1dc3267 100644
--- a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp
+++ b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp
@@ -152,16 +152,15 @@ typedef struct user_fpregs elf_fpregset_t;
 #if defined(__mips64)
 # include <sys/procfs.h>
 #endif
-#include <sys/user.h>
-#include <linux/if_eql.h>
-#include <linux/if_plip.h>
-#include <linux/lp.h>
-#include <linux/mroute.h>
-#include <linux/mroute6.h>
-#include <linux/scc.h>
-#include <linux/serial.h>
-#include <sys/msg.h>
-#include <sys/ipc.h>
+#      include <linux/if_eql.h>
+#      include <linux/if_plip.h>
+#      include <linux/lp.h>
+#      include <linux/mroute.h>
+#      include <linux/mroute6.h>
+#      include <linux/serial.h>
+#      include <sys/ipc.h>
+#      include <sys/msg.h>
+#      include <sys/user.h>
 #endif  // SANITIZER_ANDROID
 
 #include <link.h>
@@ -534,8 +533,6 @@ unsigned struct_ElfW_Phdr_sz = sizeof(Elf_Phdr);
   unsigned struct_kbsentry_sz = sizeof(struct kbsentry);
   unsigned struct_mtconfiginfo_sz = sizeof(struct mtconfiginfo);
   unsigned struct_nr_parms_struct_sz = sizeof(struct nr_parms_struct);
-  unsigned struct_scc_modem_sz = sizeof(struct scc_modem);
-  unsigned struct_scc_stat_sz = sizeof(struct scc_stat);
   unsigned struct_serial_multiport_struct_sz
       = sizeof(struct serial_multiport_struct);
   unsigned struct_serial_struct_sz = sizeof(struct serial_struct);