Merge mysql-5.1 to mysql-5.5.

6 files changed, 88 insertions, 6 deletions

diff --git a/storage/innobase/btr/btr0cur.c b/storage/innobase/btr/btr0cur.c
index 2aff65e0bf6..b93dc1b9238 100644
--- a/storage/innobase/btr/btr0cur.c
+++ b/storage/innobase/btr/btr0cur.c
@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 1994, 2010, Innobase Oy. All Rights Reserved.
+Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2008, Google Inc.
 
 Portions of this file contain modifications contributed and copyrighted by
@@ -1989,6 +1989,9 @@ btr_cur_optimistic_update(
 
 	heap = mem_heap_create(1024);
 	offsets = rec_get_offsets(rec, index, NULL, ULINT_UNDEFINED, &heap);
+#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+	ut_a(!rec_offs_any_null_extern(rec, offsets));
+#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
 
 #ifdef UNIV_DEBUG
 	if (btr_cur_print_record_ops && thr) {
diff --git a/storage/innobase/include/rem0rec.h b/storage/innobase/include/rem0rec.h
index 3d157f1da95..46914d13c7f 100644
--- a/storage/innobase/include/rem0rec.h
+++ b/storage/innobase/include/rem0rec.h
@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved.
+Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -480,6 +480,18 @@ ulint
 rec_offs_any_extern(
 /*================*/
 	const ulint*	offsets);/*!< in: array returned by rec_get_offsets() */
+#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+/******************************************************//**
+Determine if the offsets are for a record containing null BLOB pointers.
+@return	first field containing a null BLOB pointer, or NULL if none found */
+UNIV_INLINE
+const byte*
+rec_offs_any_null_extern(
+/*=====================*/
+	const rec_t*	rec,		/*!< in: record */
+	const ulint*	offsets)	/*!< in: rec_get_offsets(rec) */
+	__attribute__((nonnull, warn_unused_result));
+#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
 /******************************************************//**
 Returns nonzero if the extern bit is set in nth field of rec.
 @return	nonzero if externally stored */
diff --git a/storage/innobase/include/rem0rec.ic b/storage/innobase/include/rem0rec.ic
index 3d386710d7d..ebda6105bf1 100644
--- a/storage/innobase/include/rem0rec.ic
+++ b/storage/innobase/include/rem0rec.ic
@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved.
+Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -26,6 +26,7 @@ Created 5/30/1994 Heikki Tuuri
 #include "mach0data.h"
 #include "ut0byte.h"
 #include "dict0dict.h"
+#include "btr0types.h"
 
 /* Compact flag ORed to the extra size returned by rec_get_offsets() */
 #define REC_OFFS_COMPACT	((ulint) 1 << 31)
@@ -1087,6 +1088,44 @@ rec_offs_any_extern(
 	return(UNIV_UNLIKELY(*rec_offs_base(offsets) & REC_OFFS_EXTERNAL));
 }
 
+#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+/******************************************************//**
+Determine if the offsets are for a record containing null BLOB pointers.
+@return	first field containing a null BLOB pointer, or NULL if none found */
+UNIV_INLINE
+const byte*
+rec_offs_any_null_extern(
+/*=====================*/
+	const rec_t*	rec,		/*!< in: record */
+	const ulint*	offsets)	/*!< in: rec_get_offsets(rec) */
+{
+	ulint	i;
+	ut_ad(rec_offs_validate(rec, NULL, offsets));
+
+	if (!rec_offs_any_extern(offsets)) {
+		return(NULL);
+	}
+
+	for (i = 0; i < rec_offs_n_fields(offsets); i++) {
+		if (rec_offs_nth_extern(offsets, i)) {
+			ulint		len;
+			const byte*	field
+				= rec_get_nth_field(rec, offsets, i, &len);
+
+			ut_a(len >= BTR_EXTERN_FIELD_REF_SIZE);
+			if (!memcmp(field + len
+				    - BTR_EXTERN_FIELD_REF_SIZE,
+				    field_ref_zero,
+				    BTR_EXTERN_FIELD_REF_SIZE)) {
+				return(field);
+			}
+		}
+	}
+
+	return(NULL);
+}
+#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+
 /******************************************************//**
 Returns nonzero if the extern bit is set in nth field of rec.
 @return	nonzero if externally stored */
diff --git a/storage/innobase/row/row0row.c b/storage/innobase/row/row0row.c
index 8aa4195a70f..16a327b4715 100644
--- a/storage/innobase/row/row0row.c
+++ b/storage/innobase/row/row0row.c
@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 1996, 2010, Innobase Oy. All Rights Reserved.
+Copyright (c) 1996, 2011, Oracle and/or its affiliates. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -200,6 +200,10 @@ row_build(
 		ut_ad(rec_offs_validate(rec, index, offsets));
 	}
 
+#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+	ut_a(!rec_offs_any_null_extern(rec, offsets));
+#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+
 	if (type != ROW_COPY_POINTERS) {
 		/* Take a copy of rec to heap */
 		buf = mem_heap_alloc(heap, rec_offs_size(offsets));
@@ -383,6 +387,10 @@ row_rec_to_index_entry(
 		rec = rec_copy(buf, rec, offsets);
 		/* Avoid a debug assertion in rec_offs_validate(). */
 		rec_offs_make_valid(rec, index, offsets);
+#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+	} else {
+		ut_a(!rec_offs_any_null_extern(rec, offsets));
+#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
 	}
 
 	entry = row_rec_to_index_entry_low(rec, index, offsets, n_ext, heap);
diff --git a/storage/innobase/row/row0vers.c b/storage/innobase/row/row0vers.c
index 91c230db135..abd065ce1ff 100644
--- a/storage/innobase/row/row0vers.c
+++ b/storage/innobase/row/row0vers.c
@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved.
+Copyright (c) 1997, 2011, Oracle and/or its affiliates. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -550,6 +550,11 @@ row_vers_build_for_consistent_read(
 				/* The view already sees this version: we can
 				copy it to in_heap and return */
 
+#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+				ut_a(!rec_offs_any_null_extern(
+					     version, *offsets));
+#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+
 				buf = mem_heap_alloc(in_heap,
 						     rec_offs_size(*offsets));
 				*old_vers = rec_copy(buf, version, *offsets);
@@ -583,6 +588,10 @@ row_vers_build_for_consistent_read(
 		*offsets = rec_get_offsets(prev_version, index, *offsets,
 					   ULINT_UNDEFINED, offset_heap);
 
+#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+		ut_a(!rec_offs_any_null_extern(prev_version, *offsets));
+#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+
 		trx_id = row_get_rec_trx_id(prev_version, index, *offsets);
 
 		if (read_view_sees_trx_id(view, trx_id)) {
@@ -682,6 +691,10 @@ row_vers_build_for_semi_consistent_read(
 			/* We found a version that belongs to a
 			committed transaction: return it. */
 
+#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+			ut_a(!rec_offs_any_null_extern(version, *offsets));
+#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+
 			if (rec == version) {
 				*old_vers = rec;
 				err = DB_SUCCESS;
@@ -739,6 +752,9 @@ row_vers_build_for_semi_consistent_read(
 		version = prev_version;
 		*offsets = rec_get_offsets(version, index, *offsets,
 					   ULINT_UNDEFINED, offset_heap);
+#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+		ut_a(!rec_offs_any_null_extern(version, *offsets));
+#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
 	}/* for (;;) */
 
 	if (heap) {
diff --git a/storage/innobase/trx/trx0rec.c b/storage/innobase/trx/trx0rec.c
index 5a3b79d0ad5..5f83a9f5fd9 100644
--- a/storage/innobase/trx/trx0rec.c
+++ b/storage/innobase/trx/trx0rec.c
@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 1996, 2010, Innobase Oy. All Rights Reserved.
+Copyright (c) 1996, 2011, Oracle and/or its affiliates. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -1593,6 +1593,10 @@ trx_undo_prev_version_build(
 		return(DB_ERROR);
 	}
 
+# if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+	ut_a(!rec_offs_any_null_extern(rec, offsets));
+# endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+
 	if (row_upd_changes_field_size_or_external(index, offsets, update)) {
 		ulint	n_ext;