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authorNamhyung Kim <namhyung@kernel.org>2025-02-05 14:57:18 -0800
committerNamhyung Kim <namhyung@kernel.org>2025-02-05 14:57:18 -0800
commit9e676a024fa1fa2bd8150c2d2ba85478280353bc (patch)
tree5cf0e1d4ab27002fcafdc7dc5bdfdd9ff3f3c9f1 /include/uapi/linux/stddef.h
parent357b965deba9fb71467413e473764ec4e1694d8d (diff)
parent2014c95afecee3e76ca4a56956a936e23283f05b (diff)
Merge tag 'v6.14-rc1' into perf-tools-next
To get the various fixes in the current master. Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'include/uapi/linux/stddef.h')
-rw-r--r--include/uapi/linux/stddef.h13
1 files changed, 10 insertions, 3 deletions
diff --git a/include/uapi/linux/stddef.h b/include/uapi/linux/stddef.h
index 58154117d9b0..a6fce46aeb37 100644
--- a/include/uapi/linux/stddef.h
+++ b/include/uapi/linux/stddef.h
@@ -8,6 +8,13 @@
#define __always_inline inline
#endif
+/* Not all C++ standards support type declarations inside an anonymous union */
+#ifndef __cplusplus
+#define __struct_group_tag(TAG) TAG
+#else
+#define __struct_group_tag(TAG)
+#endif
+
/**
* __struct_group() - Create a mirrored named and anonyomous struct
*
@@ -20,13 +27,13 @@
* and size: one anonymous and one named. The former's members can be used
* normally without sub-struct naming, and the latter can be used to
* reason about the start, end, and size of the group of struct members.
- * The named struct can also be explicitly tagged for layer reuse, as well
- * as both having struct attributes appended.
+ * The named struct can also be explicitly tagged for layer reuse (C only),
+ * as well as both having struct attributes appended.
*/
#define __struct_group(TAG, NAME, ATTRS, MEMBERS...) \
union { \
struct { MEMBERS } ATTRS; \
- struct TAG { MEMBERS } ATTRS NAME; \
+ struct __struct_group_tag(TAG) { MEMBERS } ATTRS NAME; \
} ATTRS
#ifdef __cplusplus