Add comment for VARSIZE_ANY_EXHDR macro

Gurjeet Singh

diff --git a/src/include/postgres.h b/src/include/postgres.h
index cb9d196c519b554956e20dbde2371fa4252aa79c..3c5acdba8b7574494e5649c7534310c2633e9ab7 100644 (file)
--- a/src/include/postgres.h
+++ b/src/include/postgres.h
@@ -307,6 +307,7 @@ typedef struct
         (VARATT_IS_1B(PTR) ? VARSIZE_1B(PTR) : \
          VARSIZE_4B(PTR)))
 
+/* Size of a varlena data, excluding header */
 #define VARSIZE_ANY_EXHDR(PTR) \
        (VARATT_IS_1B_E(PTR) ? VARSIZE_EXTERNAL(PTR)-VARHDRSZ_EXTERNAL : \
         (VARATT_IS_1B(PTR) ? VARSIZE_1B(PTR)-VARHDRSZ_SHORT : \