Temporarily revert "Move pg_lzcompress.c to src/common."

This reverts commit 60838df922.
That change needs a bit more thought to be workable.  In view of
the potentially machine-dependent stuff that went in today,
we need all of the buildfarm to be testing those other changes.

src/backend/access/heap/tuptoaster.c

@@ -37,7 +37,7 @@
 #include "catalog/catalog.h"
 #include "miscadmin.h"
 #include "utils/fmgroids.h"
-#include "common/pg_lzcompress.h"
+#include "utils/pg_lzcompress.h"
 #include "utils/rel.h"
 #include "utils/typcache.h"
 #include "utils/tqual.h"
@@ -142,8 +142,7 @@ heap_tuple_untoast_attr(struct varlena * attr)
 
 			attr = (struct varlena *) palloc(PGLZ_RAW_SIZE(tmp) + VARHDRSZ);
 			SET_VARSIZE(attr, PGLZ_RAW_SIZE(tmp) + VARHDRSZ);
-			if (!pglz_decompress(tmp, VARDATA(attr)))
-				elog(ERROR, "compressed data is corrupted");
+			pglz_decompress(tmp, VARDATA(attr));
 			pfree(tmp);
 		}
 	}
@@ -168,8 +167,7 @@ heap_tuple_untoast_attr(struct varlena * attr)
 
 		attr = (struct varlena *) palloc(PGLZ_RAW_SIZE(tmp) + VARHDRSZ);
 		SET_VARSIZE(attr, PGLZ_RAW_SIZE(tmp) + VARHDRSZ);
-		if (!pglz_decompress(tmp, VARDATA(attr)))
-			elog(ERROR, "compressed data is corrupted");
+		pglz_decompress(tmp, VARDATA(attr));
 	}
 	else if (VARATT_IS_SHORT(attr))
 	{
@@ -241,8 +239,7 @@ heap_tuple_untoast_attr_slice(struct varlena * attr,
 
 		preslice = (struct varlena *) palloc(size);
 		SET_VARSIZE(preslice, size);
-		if (!pglz_decompress(tmp, VARDATA(preslice)))
-			elog(ERROR, "compressed data is corrupted");
+		pglz_decompress(tmp, VARDATA(preslice));
 
 		if (tmp != (PGLZ_Header *) attr)
 			pfree(tmp);

src/backend/utils/adt/Makefile

@@ -25,8 +25,8 @@ OBJS = acl.o arrayfuncs.o array_selfuncs.o array_typanalyze.o \
 	jsonfuncs.o like.o lockfuncs.o mac.o misc.o nabstime.o name.o \
 	network.o network_gist.o network_selfuncs.o \
 	numeric.o numutils.o oid.o oracle_compat.o \
-	orderedsetaggs.o pg_locale.o pg_lsn.o pgstatfuncs.o \
-	pseudotypes.o quote.o rangetypes.o rangetypes_gist.o \
+	orderedsetaggs.o pg_lzcompress.o pg_locale.o pg_lsn.o \
+	pgstatfuncs.o pseudotypes.o quote.o rangetypes.o rangetypes_gist.o \
 	rangetypes_selfuncs.o rangetypes_spgist.o rangetypes_typanalyze.o \
 	regexp.o regproc.o ri_triggers.o rowtypes.o ruleutils.o \
 	selfuncs.o tid.o timestamp.o trigfuncs.o \

src/backend/utils/adt/pg_lzcompress.c

@@ -27,7 +27,7 @@
  *				FALSE if not; in the latter case the contents of dest
  *				are undefined.
  *
- *			bool
+ *			void
  *			pglz_decompress(const PGLZ_Header *source, char *dest)
  *
  *				source is the compressed input.
@@ -40,10 +40,6 @@
  *					The data is written to buff exactly as it was handed
  *					to pglz_compress(). No terminating zero byte is added.
  *
- *				The return value is TRUE if decompression succeeded,
- *				FALSE if not; in the latter case the contents of dest
- *				are undefined.
- *
  *		The decompression algorithm and internal data format:
  *
  *			PGLZ_Header is defined as
@@ -173,14 +169,14 @@
  *
  * Copyright (c) 1999-2014, PostgreSQL Global Development Group
  *
- * src/common/pg_lzcompress.c
+ * src/backend/utils/adt/pg_lzcompress.c
  * ----------
  */
 #include "postgres.h"
 
 #include <limits.h>
 
-#include "common/pg_lzcompress.h"
+#include "utils/pg_lzcompress.h"
 
 
 /* ----------
@@ -496,8 +492,7 @@ pglz_find_match(int16 *hstart, const char *input, const char *end,
 /* ----------
  * pglz_compress -
  *
- *		Compresses source into dest using strategy. Returns false if a failure
- *		occurred, true in case of success.
+ *		Compresses source into dest using strategy.
  * ----------
  */
 bool
@@ -683,11 +678,10 @@ pglz_compress(const char *source, int32 slen, PGLZ_Header *dest,
 /* ----------
  * pglz_decompress -
  *
- *		Decompresses source into dest. Returns false if a failure
- *		occurred, true in case of success.
+ *		Decompresses source into dest.
  * ----------
  */
-bool
+void
 pglz_decompress(const PGLZ_Header *source, char *dest)
 {
 	const unsigned char *sp;
@@ -777,10 +771,9 @@ pglz_decompress(const PGLZ_Header *source, char *dest)
 	 * Check we decompressed the right amount.
 	 */
 	if (dp != destend || sp != srcend)
-		return false;
+		elog(ERROR, "compressed data is corrupt");
 
 	/*
 	 * That's it.
 	 */
-	return true;
 }

src/common/Makefile

@@ -23,8 +23,7 @@ include $(top_builddir)/src/Makefile.global
 override CPPFLAGS := -DFRONTEND $(CPPFLAGS)
 LIBS += $(PTHREAD_LIBS)
 
-OBJS_COMMON = exec.o pg_lzcompress.o pgfnames.o psprintf.o relpath.o \
-	rmtree.o username.o wait_error.o
+OBJS_COMMON = exec.o pgfnames.o psprintf.o relpath.o rmtree.o username.o wait_error.o
 
 OBJS_FRONTEND = $(OBJS_COMMON) fe_memutils.o
 

src/include/utils/pg_lzcompress.h

@@ -3,7 +3,7 @@
  *
  *	Definitions for the builtin LZ compressor
  *
- * src/include/common/pg_lzcompress.h
+ * src/include/utils/pg_lzcompress.h
  * ----------
  */
 
@@ -107,6 +107,6 @@ extern const PGLZ_Strategy *const PGLZ_strategy_always;
  */
 extern bool pglz_compress(const char *source, int32 slen, PGLZ_Header *dest,
 			  const PGLZ_Strategy *strategy);
-extern bool pglz_decompress(const PGLZ_Header *source, char *dest);
+extern void pglz_decompress(const PGLZ_Header *source, char *dest);
 
 #endif   /* _PG_LZCOMPRESS_H_ */

src/tools/msvc/Mkvcbuild.pm

@@ -76,8 +76,7 @@ sub mkvcbuild
 	push(@pgportfiles, 'rint.c') if ($vsVersion < '12.00');
 
 	our @pgcommonallfiles = qw(
-	  exec.c pg_lzcompress.c pgfnames.c psprintf.c relpath.c rmtree.c
-	  username.c wait_error.c);
+	  exec.c pgfnames.c psprintf.c relpath.c rmtree.c username.c wait_error.c);
 
 	our @pgcommonfrontendfiles = (@pgcommonallfiles, qw(fe_memutils.c));