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-rw-r--r--include/stddef.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/stddef.h b/include/stddef.h
index 696af02..e33cfed 100644
--- a/include/stddef.h
+++ b/include/stddef.h
@@ -72,7 +72,10 @@
#define offsetof(type, member) \
((size_t)((char*)&(((type*)NULL)->member) - (char*)NULL))
/* TODO The behaviour of this is undefined, and a builtin function
- * shall be used when available. That would also improve diagnostics. */
+ * shall be used when available. That would also improve diagnostics.
+ * If compilers that support ({ }), NULL could be replaced with a
+ * temporary variable, this would only remove the undefined behaviour,
+ * but any serious compiler should support the current implementation. */