Building on Debian sid with GCC 15 fails:
CC libc-gcs
libc-gcs.c: In function 'ptrace_read_write':
libc-gcs.c:142:25: error: storage size of 'child_gcs' isn't known
142 | struct user_gcs child_gcs;
| ^~~~~~~~~
libc-gcs.c:142:25: warning: unused variable 'child_gcs' [-Wunused-variable]
GCC-15 defines NT_ARM_GCS in the toolchain headers, causing gcs-util.h
to skip its fallback definition of struct user_gcs. This leads to the
compiler error.
Fix this by including <asm/ptrace.h> to provide the proper definition.
Fixes: a505a52b4e29 ("kselftest/arm64: Add a GCS test program built with the
system libc")
Signed-off-by: Leo Yan <[email protected]>
---
tools/testing/selftests/arm64/gcs/libc-gcs.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/arm64/gcs/libc-gcs.c
b/tools/testing/selftests/arm64/gcs/libc-gcs.c
index
17b2fabfec386e523e788d8bcfcafa553c93bd9b..72e82bfbecc99e34da71d56cf5401c137d6e9a48
100644
--- a/tools/testing/selftests/arm64/gcs/libc-gcs.c
+++ b/tools/testing/selftests/arm64/gcs/libc-gcs.c
@@ -16,6 +16,7 @@
#include <asm/hwcap.h>
#include <asm/mman.h>
+#include <asm/ptrace.h>
#include <linux/compiler.h>
---
base-commit: 4ee64205ffaa587e8114d84a67ac721399ccb369
change-id: 20260421-selftests_arm64_gcc15-15f6f6d07dd8
Best regards,
--
Leo Yan <[email protected]>
