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-rw-r--r--src/include/storage/bufpage.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/storage/bufpage.h b/src/include/storage/bufpage.h
index c2fbffc8e9b..a2f78ee56ce 100644
--- a/src/include/storage/bufpage.h
+++ b/src/include/storage/bufpage.h
@@ -304,6 +304,8 @@ typedef PageHeaderData *PageHeader;
#define PageGetSpecialPointer(page) \
( \
AssertMacro(PageIsValid(page)), \
+ AssertMacro(((PageHeader) (page))->pd_special <= BLCKSZ), \
+ AssertMacro(((PageHeader) (page))->pd_special >= SizeOfPageHeaderData), \
(char *) ((char *) (page) + ((PageHeader) (page))->pd_special) \
)