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-rw-r--r--gcc/tree.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/tree.h b/gcc/tree.h
index ff73de46ae2..cacdc147a72 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -968,7 +968,9 @@ struct tree_type
/* For any sort of a ..._DECL node, this points to the original (abstract)
decl node which this decl is an instance of, or else it is NULL indicating
- that this decl is not an instance of some other decl. */
+ that this decl is not an instance of some other decl. For example,
+ in a nested declaration of an inline function, this points back to the
+ definition. */
#define DECL_ABSTRACT_ORIGIN(NODE) ((NODE)->decl.abstract_origin)
/* Nonzero for any sort of ..._DECL node means this decl node represents