[svn-r27887] Description:

    Merge changes from trunk to the branch.

Tested on:
    MacOSX/64 10.10.5 (amazon) w/serial & parallel
    (h5committest not required on this branch)

11 files changed, 277 insertions, 176 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 96d5772..1035142 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -212,6 +212,10 @@ if (NOT HDF5_INSTALL_DATA_DIR)
   endif (NOT WIN32)
 endif (NOT HDF5_INSTALL_DATA_DIR)
 
+if(DEFINED ADDITIONAL_CMAKE_PREFIX_PATH AND EXISTS "${ADDITIONAL_CMAKE_PREFIX_PATH}")
+  set (CMAKE_PREFIX_PATH ${ADDITIONAL_CMAKE_PREFIX_PATH} ${CMAKE_PREFIX_PATH})
+endif(DEFINED ADDITIONAL_CMAKE_PREFIX_PATH AND EXISTS "${ADDITIONAL_CMAKE_PREFIX_PATH}")
+
 #-----------------------------------------------------------------------------
 # parse the full version number from H5public.h and include in H5_VERS_INFO
 #-----------------------------------------------------------------------------
diff --git a/autogen.sh b/autogen.sh
index 237e1b1..d76c016 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /bin/bash
 #
 # Copyright by The HDF Group.                                              
 # All rights reserved.                                                     
@@ -60,7 +60,7 @@
 #
 # This script takes two potential options:
 #
-# -p, --production
+# -p
 #
 # When this is selected, the autotools versions are set to the paths
 # and versions used by The HDF Group to produce the released versions
@@ -70,7 +70,7 @@
 # to have recent versions of the autotools this option will probably
 # be removed.
 #
-# -v, --verbose
+# -v
 #
 # This emits some extra information, mainly tool versions.
 
@@ -89,33 +89,19 @@ verbose=false
 optspec=":hpv-"
 while getopts "$optspec" optchar; do
     case "${optchar}" in
-    -)
-        case "${OPTARG}" in
-            production)
-                echo "Setting production mode..."
-                echo
-                production=true
-                ;;
-            verbose)
-                echo "Setting verbosity: high"
-                echo
-                verbose=true
-                ;;
-            *)
-                if [ "$OPTERR" = 1 ] && [ "${optspec:0:1}" != ":" ]; then
-                    echo "Unknown option --${OPTARG}" >&2
-                fi
-                ;;
-        esac;;
     h)
-        echo "usage: $0 [-p|--production]"
+        echo "usage: $0 [OPTIONS]"
+        echo
+        echo "      -h      Print this help message."
         echo
         echo "      -p      Used by THG to ensure that particular versions"
         echo "              of the autotools are used and hard-codes"
         echo "              autotools paths to THG machines. Not for"
         echo "              non-HDF-Group users!"
         echo
-        echo "  NOTE: Each autotool can be set via an environment variable."
+        echo "      -v      Show more verbose output."
+        echo
+        echo "  NOTE: Each tool can be set via an environment variable."
         echo "        These are documented inside this autogen.sh script."
         echo
         exit 0
@@ -396,15 +382,37 @@ bin/make_overflow src/H5overflow.txt || exit 1
 # to install a later version of bison. See the OS X note at the top
 # of this script.
 echo
-echo "Running flex/bison:"
-cd hl/src
+echo "Generating H5LT parser code (requires yacc/bison):"
 echo "Generate hl/src/H5LTparse.c from hl/src/H5LTparse.y"
+# HDF5_BISON is set via the environment or 'which bison', above
+if test -z ${HDF5_BISON}; then
+    echo
+    echo "*************************"
+    echo " ERROR - bison not found"
+    echo "*************************"
+    echo "bison is required to generate parser code in H5LT"
+    echo
+    exit 127
+fi
+cd hl/src
 if [ "$verbose" = true ] ; then
     ${HDF5_BISON} --version
 fi
 ${HDF5_BISON} -pH5LTyy -o H5LTparse.c -d H5LTparse.y
 
+echo
+echo "Generating H5LT lexer code (requires lex/flex):"
 echo "Generate hl/src/H5LTanalyze.c from hl/src/H5LTanalyze.l"
+# HDF5_FLEX is set via the environment or 'which flex', above
+if test -z ${HDF5_FLEX}; then
+    echo
+    echo "************************"
+    echo " ERROR - flex not found"
+    echo "************************"
+    echo "flex is required to generate lexer code in H5LT"
+    echo
+    exit 127
+fi
 if [ "$verbose" = true ] ; then
     ${HDF5_FLEX} --version
 fi
diff --git a/config/cmake/HDF5_Examples.cmake.in b/config/cmake/HDF5_Examples.cmake.in
index d0c0509..65e2e9e 100644
--- a/config/cmake/HDF5_Examples.cmake.in
+++ b/config/cmake/HDF5_Examples.cmake.in
@@ -1,20 +1,48 @@
 cmake_minimum_required(VERSION 3.1.0 FATAL_ERROR)
 ###############################################################################################################
-# This script will build and run the examples from a compressed file
+# This script will build and run the examples from a folder
 # Execute from a command line:
-#     ctest -S HDF5_Examples.cmake,HDF5Examples -C Release -V -O test.log
+#     ctest -S HDF5_Examples.cmake,OPTION=VALUE -C Release -V -O test.log
 ###############################################################################################################
 
-set(INSTALLDIR "@CMAKE_INSTALL_PREFIX@")
 set(CTEST_CMAKE_GENERATOR "@CMAKE_GENERATOR@")
-set(STATICLIBRARIES "@H5_ENABLE_STATIC_LIB@")
-set(CTEST_SOURCE_NAME ${CTEST_SCRIPT_ARG})
 set(CTEST_DASHBOARD_ROOT ${CTEST_SCRIPT_DIRECTORY})
-set(CTEST_BUILD_CONFIGURATION "Release")
-#set(NO_MAC_FORTRAN "true")
 #set(BUILD_OPTIONS "${BUILD_OPTIONS} -DHDF_BUILD_FORTRAN:BOOL=ON")
-set(BUILD_OPTIONS "${BUILD_OPTIONS} -DHDF_ENABLE_F2003:BOOL=ON")
-#set(CTEST_USE_TAR_SOURCE "${CTEST_SCRIPT_ARG}")
+
+# handle input parameters to script.
+#INSTALLDIR - HDF5 root folder
+#CTEST_BUILD_CONFIGURATION - Release, Debug, RelWithDebInfo
+#CTEST_SOURCE_NAME - name of source folder; HDF4Examples
+#STATICLIBRARIES - Default is YES
+#NO_MAC_FORTRAN - set to TRUE to allow shared libs on a Mac)
+if(DEFINED CTEST_SCRIPT_ARG)
+    # transform ctest script arguments of the form
+    # script.ctest,var1=value1,var2=value2
+    # to variables with the respective names set to the respective values
+    string(REPLACE "," ";" script_args "${CTEST_SCRIPT_ARG}")
+    foreach(current_var ${script_args})
+        if ("${current_var}" MATCHES "^([^=]+)=(.+)$")
+            set("${CMAKE_MATCH_1}" "${CMAKE_MATCH_2}")
+        endif()
+    endforeach()
+endif()
+if(NOT DEFINED INSTALLDIR)
+    set(INSTALLDIR "@CMAKE_INSTALL_PREFIX@")
+endif()
+if(NOT DEFINED CTEST_BUILD_CONFIGURATION)
+    set(CTEST_BUILD_CONFIGURATION "Release")
+endif()
+if(NOT DEFINED CTEST_SOURCE_NAME)
+    set(CTEST_SOURCE_NAME "HDF5Examples")
+endif()
+if(NOT DEFINED STATICLIBRARIES)
+    set(STATICLIBRARIES "YES")
+endif()
+
+#TAR_SOURCE - name of tarfile
+#if(NOT DEFINED TAR_SOURCE)
+#  set(CTEST_USE_TAR_SOURCE "HDF5Examples-1.10.1-Source")
+#endif()
 
 ###############################################################################################################
 #     Adjust the following SET Commands as needed
@@ -42,7 +70,7 @@ endif(WIN32)
 # For any comments please contact cdashhelp@hdfgroup.org
 #
 ###############################################################################################################
- 
+
 #-----------------------------------------------------------------------------
 # MAC machines need special option
 #-----------------------------------------------------------------------------
@@ -53,14 +81,14 @@ if(APPLE)
   set(ENV{CC} "${XCODE_CC}")
   set(ENV{CXX} "${XCODE_CXX}")
   if(NOT NO_MAC_FORTRAN)
-    # Shared fortran is not supported, build static 
+    # Shared fortran is not supported, build static
     set(BUILD_OPTIONS "${BUILD_OPTIONS} -DBUILD_SHARED_LIBS:BOOL=OFF -DCMAKE_ANSI_CFLAGS:STRING=-fPIC")
   else(NOT NO_MAC_FORTRAN)
     set(BUILD_OPTIONS "${BUILD_OPTIONS} -DHDF_BUILD_FORTRAN:BOOL=OFF")
   endif(NOT NO_MAC_FORTRAN)
   set(BUILD_OPTIONS "${BUILD_OPTIONS} -DCTEST_USE_LAUNCHERS:BOOL=ON -DCMAKE_BUILD_WITH_INSTALL_RPATH:BOOL=OFF")
 endif(APPLE)
- 
+
 #-----------------------------------------------------------------------------
 set(CTEST_CMAKE_COMMAND "\"${CMAKE_COMMAND}\"")
 ## --------------------------
@@ -69,19 +97,19 @@ if(CTEST_USE_TAR_SOURCE)
   ## --------------------------
   if(WIN32)
     message(STATUS "extracting... [${CMAKE_EXECUTABLE_NAME} -E tar -xvf ${CTEST_USE_TAR_SOURCE}.zip]")
-    execute_process(COMMAND ${CMAKE_EXECUTABLE_NAME} -E tar -xvf ${CTEST_USE_TAR_SOURCE}.zip RESULT_VARIABLE rv)
-  else(WIN32)
+    execute_process(COMMAND ${CMAKE_EXECUTABLE_NAME} -E tar -xvf ${CTEST_DASHBOARD_ROOT}\\${CTEST_USE_TAR_SOURCE}.zip RESULT_VARIABLE rv)
+  else()
     message(STATUS "extracting... [${CMAKE_EXECUTABLE_NAME} -E tar -xvf ${CTEST_USE_TAR_SOURCE}.tar]")
-    execute_process(COMMAND ${CMAKE_EXECUTABLE_NAME} -E tar -xvf ${CTEST_USE_TAR_SOURCE}.tar RESULT_VARIABLE rv)
-  endif(WIN32)
- 
+    execute_process(COMMAND ${CMAKE_EXECUTABLE_NAME} -E tar -xvf ${CTEST_DASHBOARD_ROOT}/${CTEST_USE_TAR_SOURCE}.tar RESULT_VARIABLE rv)
+  endif()
+
   if(NOT rv EQUAL 0)
     message(STATUS "extracting... [error-(${rv}) clean up]")
     file(REMOVE_RECURSE "${CTEST_SOURCE_DIRECTORY}")
     message(FATAL_ERROR "error: extract of ${CTEST_SOURCE_NAME} failed")
   endif(NOT rv EQUAL 0)
 endif(CTEST_USE_TAR_SOURCE)
- 
+
 #-----------------------------------------------------------------------------
 ## Clear the build directory
 ## --------------------------
@@ -104,11 +132,11 @@ endif()
 set (CTEST_CONFIGURE_COMMAND
     "${CTEST_CMAKE_COMMAND} -C \"${CTEST_SOURCE_DIRECTORY}/config/cmake/cacheinit.cmake\" -DCMAKE_BUILD_TYPE:STRING=${CTEST_BUILD_CONFIGURATION} ${BUILD_OPTIONS} \"-G${CTEST_CMAKE_GENERATOR}\" \"${CTEST_SOURCE_DIRECTORY}\""
 )
- 
+
 #-----------------------------------------------------------------------------
 ## -- set output to english
 set($ENV{LC_MESSAGES}  "en_EN")
- 
+
 #-----------------------------------------------------------------------------
 configure_file(${CTEST_SOURCE_DIRECTORY}/config/cmake/CTestCustom.cmake ${CTEST_BINARY_DIRECTORY}/CTestCustom.cmake)
 ctest_read_custom_files ("${CTEST_BINARY_DIRECTORY}")
@@ -122,5 +150,5 @@ if(res GREATER 0)
   message (FATAL_ERROR "tests FAILED")
 endif(res GREATER 0)
 #-----------------------------------------------------------------------------
-############################################################################################################## 
+##############################################################################################################
 message(STATUS "DONE")
\ No newline at end of file
diff --git a/config/cmake/README.txt.cmake.in b/config/cmake/README.txt.cmake.in
index a12c5aa..ec40abe 100644
--- a/config/cmake/README.txt.cmake.in
+++ b/config/cmake/README.txt.cmake.in
@@ -1,11 +1,11 @@
 @HDF5_PACKAGE_NAME@ version @HDF5_PACKAGE_VERSION_STRING@
 ------------------------------------------------------------------------------
 
-This directory contains the binary (release) distribution of 
+This directory contains the binary (release) distribution of
 @HDF5_PACKAGE_NAME@ @HDF5_PACKAGE_VERSION_MAJOR@ that was compiled on;
-    @BINARY_PLATFORM@. 
+    @BINARY_PLATFORM@.
 
-It was built with the following options: 
+It was built with the following options:
     -- @LIB_TYPE@ C/C++/Fortran libraries
     -- SZIP (encoder enabled) and ZLIB
     -- @LIB_TYPE@ HDF5 tools
@@ -24,27 +24,38 @@ Installation
 
 After Installation
 ===========================================================================
-The examples folder, HDF5Examples, located in the 
+The examples folder, HDF5Examples, located in the
 HDF5 install folder, can be built and tested with CMake and the supplied
 HDF5_Examples.cmake file. The HDF5_Examples.cmake expects HDF5 to have
-been installed in the default location with above compilers. Also, the CMake 
+been installed in the default location with above compilers. Also, the CMake
 utility should be installed.
 
 To test the installation with the examples;
     Create a directory to run the examples.
     Copy HDF5Examples folder to this directory.
     Copy HDF5_Examples.cmake to this directory.
-    Edit HDF5_Examples.cmake line 8 to set INSTALLDIR to where HDF5 is installed.
-       (The default should be correct unless you installed into a different folder.)
-    Execute from this directory: 
-        ctest -S HDF5_Examples.cmake,HDF5Examples -C Release -V -O test.log
+    The default source folder is defined as "HDF5Examples". It can be changed
+        with the CTEST_SOURCE_NAME script option.
+    The default installation folder is defined as "@CMAKE_INSTALL_PREFIX@".
+        It can be changed with the INSTALLDIR script option.
+    The default ctest configuration is defined as "Release". It can be changed
+        with the CTEST_BUILD_CONFIGURATION script option. Note that this must
+        be the same as the value used with the -C command line option.
+    The default build configuration is defined to build and use static libraries.
+        Shared libraries can be used with the STATICLIBRARIES script option set to "NO".
+    Other options can be changed by editing the HDF5_Examples.cmake file.
+
+    If the defaults are okay, execute from this directory:
+        ctest -S HDF5_Examples.cmake -C Release -V -O test.log
+    If the defaults need change, execute from this directory:
+        ctest -S HDF5_Examples.cmake,CTEST_SOURCE_NAME=MyExamples,INSTALLDIR=MyLocation -C Release -V -O test.log
 
 When executed, the ctest script will save the results to the log file, test.log, as
-indicated by the ctest command. If you wish the to see more build and test information, 
+indicated by the ctest command. If you wish the to see more build and test information,
 add "-VV" to the ctest command. The output should show;
       100% tests passed, 0 tests failed out of 156.
 
-For more information see USING_CMake_Examples.txt in the install folder. 
+For more information see USING_CMake_Examples.txt in the install folder.
 ===========================================================================
 
 Documentation for this release can be found at the following URL:
diff --git a/release_docs/USING_CMake_Examples.txt b/release_docs/USING_CMake_Examples.txt
index d52a719..a6854ae 100644
--- a/release_docs/USING_CMake_Examples.txt
+++ b/release_docs/USING_CMake_Examples.txt
@@ -28,8 +28,8 @@ I. Preconditions
       the HDF Install Utility (the *.msi file in the binary package for
       Windows or the *.sh on Linux). If you are using a Windows platform,
       you can obtain a pre-built Windows binary from The HDF Group's website
-      at www.hdfgroup.org. See Section "III. Common changes to the
-      HDF518_Examples.cmake file", for the line to change the location.
+      at www.hdfgroup.org.
+
 
 
 ========================================================================
@@ -37,40 +37,41 @@ II. Building HDF5 Examples with CMake
 ========================================================================
 
 Files in the HDF5 install directory:
-       HDF5Examples-0.1.1-Source folder
+       HDF5Examples folder
        HDF518_Examples.cmake
 
 Default installation process:
        Create a directory to run the examples, i.e. \test_hdf5.
-       Copy HDF5Examples-0.1.1-Source folder to this directory.
-       Copy HDF518_Examples.cmake to this directory.
-       Edit line 8 of the HDF518_Examples.cmake file and change the INSTALLDIR
-           to the HDF5 install location.
-
-       Execute from this directory:
-          ctest -S HDF518_Examples.cmake,HDF5Examples-0.1.1-Source -C Release -O test.log
-
-The script will use the examples folder HDF5Examples-0.1.1-Source,
-   and create a build directory inside the HDF5Examples-0.1.1-Source directory.
-   It will then configure, build, and execute the examples. All the log files
-   will be found under the build\Testing\Temporary directory, check these for
-   errors.
-
-The amount of script information can be increased by adding -V to the ctest
-   command. Even more information can be shown by adding -VV instead of -V.
+       Copy HDF5Examples folder to this directory.
+       Copy HDF5_Examples.cmake to this directory.
+       The default source folder is defined as "HDF5Examples". It can be changed
+           with the CTEST_SOURCE_NAME script option.
+       The default installation folder is defined as "@CMAKE_INSTALL_PREFIX@".
+           It can be changed with the INSTALLDIR script option.
+       The default ctest configuration is defined as "Release". It can be changed
+           with the CTEST_BUILD_CONFIGURATION script option. Note that this must
+           be the same as the value used with the -C command line option.
+       The default build configuration is defined to build and use static libraries.
+           Shared libraries can be used with the STATICLIBRARIES script option set to "NO".
+       Other options can be changed by editing the HDF5_Examples.cmake file.
+
+       If the defaults are okay, execute from this directory:
+           ctest -S HDF5_Examples.cmake -C Release -V -O test.log
+       If the defaults need change, execute from this directory:
+           ctest -S HDF5_Examples.cmake,CTEST_SOURCE_NAME=MyExamples,INSTALLDIR=MyLocation -C Release -V -O test.log
+
+    When executed, the ctest script will save the results to the log file, test.log, as
+    indicated by the ctest command. If you wish the to see more build and test information,
+    add "-VV" to the ctest command. The output should show;
+          100% tests passed, 0 tests failed out of 156.
 
 
 ========================================================================
-III. Common changes to the HDF518_Examples.cmake file
+III. Other changes to the HDF518_Examples.cmake file
 ========================================================================
 
-Line 8: change the INSTALLDIR to a different HDF5 install location.
-
-Line 14: uncomment to allow Mac machines to build shared examples.
-
-Line 15: uncomment to build and test Fortran examples.
-
-Line 16: comment to NOT build and test Fortran examples with F2003 option.
+Line 10: uncomment to build and test Fortran examples.
 
-Line 17: uncomment to use a compressed source file.
+Line 43-45: uncomment to use a source tarball or zipfile;
+     Add script option "TAR_SOURCE=MySource.tar".
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ff69d5e..6253f51 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -820,6 +820,11 @@ if (HDF5_GENERATE_HEADERS)
   endif (PERL_FOUND)
 endif (HDF5_GENERATE_HEADERS)
 
+set (H5_PUBLIC_GENERATED_HEADERS
+    ${HDF5_SRC_DIR}/H5version.h
+    ${HDF5_SRC_DIR}/H5overflow.h
+)
+
 #-----------------------------------------------------------------------------
 # Setup the H5Detect utility which generates H5Tinit with platform
 # specific type checks inside
@@ -832,7 +837,7 @@ endif (MSVC OR MINGW)
 if (HDF5_GENERATE_HEADERS)
   add_dependencies(H5detect generate_precompiled)
 else (HDF5_GENERATE_HEADERS)
-  add_dependencies(H5detect "${HDF5_SRC_DIR}/H5version.h;${HDF5_SRC_DIR}/H5overflow.h")
+  add_dependencies(H5detect "${H5_PUBLIC_GENERATED_HEADERS}")
 endif (HDF5_GENERATE_HEADERS)
 
 set (CMD $<TARGET_FILE:H5detect>)
@@ -851,7 +856,7 @@ endif (MSVC OR MINGW)
 if (HDF5_GENERATE_HEADERS)
   add_dependencies(H5detect generate_precompiled)
 else (HDF5_GENERATE_HEADERS)
-  add_dependencies(H5make_libsettings "${HDF5_SRC_DIR}/H5version.h;${HDF5_SRC_DIR}/H5overflow.h")
+  add_dependencies(H5make_libsettings "${H5_PUBLIC_GENERATED_HEADERS}")
 endif (HDF5_GENERATE_HEADERS)
 
 set (CMD $<TARGET_FILE:H5make_libsettings>)
@@ -900,7 +905,7 @@ endif (HDF5_ENABLE_DEBUG_APIS)
 set (install_targets ${HDF5_LIB_TARGET})
 
 if (BUILD_SHARED_LIBS)
-  add_library (${HDF5_LIBSH_TARGET} SHARED ${common_SRCS} ${H5_PUBLIC_HEADERS} ${H5_PRIVATE_HEADERS})
+  add_library (${HDF5_LIBSH_TARGET} SHARED ${common_SRCS} ${H5_PUBLIC_HEADERS} ${H5_PRIVATE_HEADERS} ${H5_GENERATED_HEADERS})
   TARGET_C_PROPERTIES (${HDF5_LIBSH_TARGET} SHARED " " " ")
   target_link_libraries (${HDF5_LIBSH_TARGET} ${LINK_SHARED_LIBS})
   if (NOT WIN32)
@@ -945,6 +950,7 @@ if (NOT HDF5_INSTALL_NO_DEVELOPMENT)
   install (
       FILES
           ${H5_PUBLIC_HEADERS}
+          ${H5_PUBLIC_GENERATED_HEADERS}
       DESTINATION
           ${HDF5_INSTALL_INCLUDE_DIR}
       COMPONENT
diff --git a/src/H5S.c b/src/H5S.c
index 1d07f14..af7d395 100644
--- a/src/H5S.c
+++ b/src/H5S.c
@@ -1576,11 +1576,12 @@ done:
 herr_t
 H5S_encode(H5S_t *obj, unsigned char **p, size_t *nalloc)
 {
+    H5F_t       *f = NULL;      /* Fake file structure*/
+    unsigned char *pp = (*p);   /* Local pointer for decoding */
     size_t      extent_size;    /* Size of serialized dataspace extent */
     hssize_t    sselect_size;   /* Signed size of serialized dataspace selection */
     size_t      select_size;    /* Size of serialized dataspace selection */
-    H5F_t       *f = NULL;      /* Fake file structure*/
-    herr_t      ret_value = SUCCEED;
+    herr_t      ret_value = SUCCEED;    /* Return value */
 
     FUNC_ENTER_NOAPI_NOINIT
 
@@ -1599,27 +1600,28 @@ H5S_encode(H5S_t *obj, unsigned char **p, size_t *nalloc)
 
     /* Verify the size of buffer.  If it's not big enough, simply return the
      * right size without filling the buffer. */
-    if(!*p || *nalloc < (extent_size + select_size + 1 + 1 + 1 + 4))
+    if(!pp || *nalloc < (extent_size + select_size + 1 + 1 + 1 + 4))
         *nalloc = extent_size + select_size + 1 + 1 + 1 + 4;
     else {
         /* Encode the type of the information */
-        *(*p)++ = H5O_SDSPACE_ID;
+        *pp++ = H5O_SDSPACE_ID;
 
         /* Encode the version of the dataspace information */
-        *(*p)++ = H5S_ENCODE_VERSION;
+        *pp++ = H5S_ENCODE_VERSION;
 
         /* Encode the "size of size" information */
-        *(*p)++ = (unsigned char)H5F_SIZEOF_SIZE(f);
+        *pp++ = (unsigned char)H5F_SIZEOF_SIZE(f);
 
         /* Encode size of extent information. Pointer is actually moved in this macro. */
-        UINT32ENCODE(*p, extent_size);
+        UINT32ENCODE(pp, extent_size);
 
         /* Encode the extent part of dataspace */
-        if(H5O_msg_encode(f, H5O_SDSPACE_ID, TRUE, *p, obj) < 0)
+        if(H5O_msg_encode(f, H5O_SDSPACE_ID, TRUE, pp, obj) < 0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTENCODE, FAIL, "can't encode extent space")
-        *p += extent_size;
+        pp += extent_size;
 
         /* Encode the selection part of dataspace.  */
+        *p = pp;
         if(H5S_SELECT_SERIALIZE(obj, p) < 0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTENCODE, FAIL, "can't encode select space")
     } /* end else */
@@ -1692,38 +1694,39 @@ done:
 H5S_t*
 H5S_decode(const unsigned char **p)
 {
-    H5S_t       *ds;
-    H5S_extent_t *extent;
-    size_t      extent_size;            /* size of the extent message*/
     H5F_t       *f = NULL;              /* Fake file structure*/
+    H5S_t       *ds;                    /* Decoded dataspace */
+    H5S_extent_t *extent;               /* Entent of decoded dataspace */
+    const unsigned char *pp = (*p);     /* Local pointer for decoding */
+    size_t      extent_size;            /* size of the extent message*/
     uint8_t     sizeof_size;            /* 'Size of sizes' for file */
     H5S_t       *ret_value = NULL;      /* Return value */
 
     FUNC_ENTER_NOAPI_NOINIT
 
     /* Decode the type of the information */
-    if(*(*p)++ != H5O_SDSPACE_ID)
+    if(*pp++ != H5O_SDSPACE_ID)
 	HGOTO_ERROR(H5E_DATASPACE, H5E_BADMESG, NULL, "not an encoded dataspace")
 
     /* Decode the version of the dataspace information */
-    if(*(*p)++ != H5S_ENCODE_VERSION)
+    if(*pp++ != H5S_ENCODE_VERSION)
 	HGOTO_ERROR(H5E_DATASPACE, H5E_VERSION, NULL, "unknown version of encoded dataspace")
 
     /* Decode the "size of size" information */
-    sizeof_size = *(*p)++;
+    sizeof_size = *pp++;
 
     /* Allocate "fake" file structure */
     if(NULL == (f = H5F_fake_alloc(sizeof_size)))
 	HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, NULL, "can't allocate fake file struct")
 
     /* Decode size of extent information */
-    UINT32DECODE(*p, extent_size);
+    UINT32DECODE(pp, extent_size);
 
     /* Decode the extent part of dataspace */
     /* (pass mostly bogus file pointer and bogus DXPL) */
-    if((extent = (H5S_extent_t *)H5O_msg_decode(f, H5P_DEFAULT, NULL, H5O_SDSPACE_ID, *p))==NULL)
+    if((extent = (H5S_extent_t *)H5O_msg_decode(f, H5P_DEFAULT, NULL, H5O_SDSPACE_ID, pp))==NULL)
 	HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDECODE, NULL, "can't decode object")
-    *p += extent_size;
+    pp += extent_size;
 
     /* Copy the extent into dataspace structure */
     if((ds = H5FL_CALLOC(H5S_t))==NULL)
@@ -1739,6 +1742,7 @@ H5S_decode(const unsigned char **p)
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSET, NULL, "unable to set all selection")
 
     /* Decode the select part of dataspace.  I believe this part always exists. */
+    *p = pp;
     if(H5S_SELECT_DESERIALIZE(&ds, p) < 0)
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDECODE, NULL, "can't decode space selection")
 
diff --git a/src/H5Sall.c b/src/H5Sall.c
index 79796c3..fb6b45f 100644
--- a/src/H5Sall.c
+++ b/src/H5Sall.c
@@ -516,19 +516,25 @@ H5S_all_serial_size (const H5S_t H5_ATTR_UNUSED *space)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_all_serialize (const H5S_t *space, uint8_t **p)
+H5S_all_serialize(const H5S_t *space, uint8_t **p)
 {
+    uint8_t *pp = (*p);         /* Local pointer for decoding */
+
     FUNC_ENTER_NOAPI_NOINIT_NOERR
 
+    /* Check args */
     HDassert(space);
     HDassert(p);
-    HDassert(*p);
+    HDassert(pp);
 
     /* Store the preamble information */
-    UINT32ENCODE(*p, (uint32_t)H5S_GET_SELECT_TYPE(space));  /* Store the type of selection */
-    UINT32ENCODE(*p, (uint32_t)1);  /* Store the version number */
-    UINT32ENCODE(*p, (uint32_t)0);  /* Store the un-used padding */
-    UINT32ENCODE(*p, (uint32_t)0);  /* Store the additional information length */
+    UINT32ENCODE(pp, (uint32_t)H5S_GET_SELECT_TYPE(space));  /* Store the type of selection */
+    UINT32ENCODE(pp, (uint32_t)1);  /* Store the version number */
+    UINT32ENCODE(pp, (uint32_t)0);  /* Store the un-used padding */
+    UINT32ENCODE(pp, (uint32_t)0);  /* Store the additional information length */
+
+    /* Update encoding pointer */
+    *p = pp;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
 }   /* H5S_all_serialize() */
diff --git a/src/H5Shyper.c b/src/H5Shyper.c
index 1a4e4f5..11e5369 100644
--- a/src/H5Shyper.c
+++ b/src/H5Shyper.c
@@ -2014,14 +2014,14 @@ H5S_hyper_serial_size(const H5S_t *space)
  PURPOSE
     Serialize the current selection into a user-provided buffer.
  USAGE
-    herr_t H5S_hyper_serialize_helper(spans, start, end, rank, buf)
+    void H5S_hyper_serialize_helper(spans, start, end, rank, buf)
         H5S_hyper_span_info_t *spans;   IN: Hyperslab span tree to serialize
         hssize_t start[];       IN/OUT: Accumulated start points
         hssize_t end[];         IN/OUT: Accumulated end points
         hsize_t rank;           IN: Current rank looking at
         uint8 *buf;             OUT: Buffer to put serialized selection into
  RETURNS
-    Non-negative on success/Negative on failure
+    <none>
  DESCRIPTION
     Serializes the current element selection into a buffer.  (Primarily for
     storing on disk).
@@ -2030,13 +2030,13 @@ H5S_hyper_serial_size(const H5S_t *space)
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-static herr_t
-H5S_hyper_serialize_helper (const H5S_hyper_span_info_t *spans,
+static void
+H5S_hyper_serialize_helper(const H5S_hyper_span_info_t *spans,
         hsize_t *start, hsize_t *end, hsize_t rank, uint8_t **p)
 {
     H5S_hyper_span_t *curr;     /* Pointer to current hyperslab span */
+    uint8_t *pp = (*p);         /* Local pointer for decoding */
     hsize_t u;                  /* Index variable */
-    herr_t ret_value=SUCCEED;  /* return value */
 
     FUNC_ENTER_NOAPI_NOINIT
 
@@ -2045,7 +2045,7 @@ H5S_hyper_serialize_helper (const H5S_hyper_span_info_t *spans,
     HDassert(start);
     HDassert(end);
     HDassert(rank < H5O_LAYOUT_NDIMS);
-    HDassert(p && *p);
+    HDassert(p && pp);
 
     /* Walk through the list of spans, recursing or outputing them */
     curr=spans->head;
@@ -2057,33 +2057,35 @@ H5S_hyper_serialize_helper (const H5S_hyper_span_info_t *spans,
             end[rank]=curr->high;
 
             /* Recurse down to the next dimension */
-            if(H5S_hyper_serialize_helper(curr->down,start,end,rank+1,p)<0)
-                HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release hyperslab spans")
+            *p = pp;
+            H5S_hyper_serialize_helper(curr->down, start, end, rank = 1, p);
         } /* end if */
         else {
             /* Encode all the previous dimensions starting & ending points */
 
             /* Encode previous starting points */
             for(u=0; u<rank; u++)
-                UINT32ENCODE(*p, (uint32_t)start[u]);
+                UINT32ENCODE(pp, (uint32_t)start[u]);
 
             /* Encode starting point for this span */
-            UINT32ENCODE(*p, (uint32_t)curr->low);
+            UINT32ENCODE(pp, (uint32_t)curr->low);
 
             /* Encode previous ending points */
             for(u=0; u<rank; u++)
-                UINT32ENCODE(*p, (uint32_t)end[u]);
+                UINT32ENCODE(pp, (uint32_t)end[u]);
 
             /* Encode starting point for this span */
-            UINT32ENCODE(*p, (uint32_t)curr->high);
+            UINT32ENCODE(pp, (uint32_t)curr->high);
         } /* end else */
 
         /* Advance to next node */
         curr=curr->next;
     } /* end while */
 
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
+    /* Update encoding pointer */
+    *p = pp;
+
+    FUNC_LEAVE_NOAPI_VOID
 }   /* H5S_hyper_serialize_helper() */
 
 
@@ -2109,14 +2111,15 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_serialize (const H5S_t *space, uint8_t **p)
+H5S_hyper_serialize(const H5S_t *space, uint8_t **p)
 {
     const H5S_hyper_dim_t *diminfo;         /* Alias for dataspace's diminfo information */
+    uint8_t *pp = (*p);                     /* Local pointer for decoding */
     hsize_t tmp_count[H5O_LAYOUT_NDIMS];    /* Temporary hyperslab counts */
-    hsize_t offset[H5O_LAYOUT_NDIMS];      /* Offset of element in dataspace */
+    hsize_t offset[H5O_LAYOUT_NDIMS];       /* Offset of element in dataspace */
     hsize_t start[H5O_LAYOUT_NDIMS];   /* Location of start of hyperslab */
     hsize_t end[H5O_LAYOUT_NDIMS];     /* Location of end of hyperslab */
-    hsize_t temp_off;            /* Offset in a given dimension */
+    hsize_t temp_off;       /* Offset in a given dimension */
     uint8_t *lenp;          /* pointer to length location for later storage */
     uint32_t len = 0;       /* number of bytes used */
     uint32_t version;       /* Version number */
@@ -2128,7 +2131,10 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t **p)
 
     FUNC_ENTER_NOAPI_NOINIT_NOERR
 
+    /* Check args */
     HDassert(space);
+    HDassert(p);
+    HDassert(pp);
 
     /* Calculate version */
     if(space->select.sel_info.hslab->unlim_dim >= 0) {
@@ -2139,17 +2145,17 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t **p)
         version = 1;
 
     /* Store the preamble information */
-    UINT32ENCODE(*p, (uint32_t)H5S_GET_SELECT_TYPE(space)); /* Store the type of selection */
-    UINT32ENCODE(*p, version); /* Store the version number */
+    UINT32ENCODE(pp, (uint32_t)H5S_GET_SELECT_TYPE(space)); /* Store the type of selection */
+    UINT32ENCODE(pp, version); /* Store the version number */
     if(version >= 2)
-        *(*p)++ = flags; /* Store the flags */
+        *pp++ = flags; /* Store the flags */
     else
-        UINT32ENCODE(*p, (uint32_t)0); /* Store the un-used padding */
-    lenp = *p;           /* keep the pointer to the length location for later */
-    *p += 4;             /* skip over space for length */
+        UINT32ENCODE(pp, (uint32_t)0); /* Store the un-used padding */
+    lenp = pp;           /* Keep the pointer to the length location for later */
+    pp += 4;             /* Skip over space for length */
 
     /* Encode number of dimensions */
-    UINT32ENCODE(*p, (uint32_t)space->extent.rank);
+    UINT32ENCODE(pp, (uint32_t)space->extent.rank);
     len += 4;
 
     /* If there is an unlimited dimension, only encode opt_unlim_diminfo */
@@ -2161,10 +2167,10 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t **p)
         /* Iterate over dimensions */
         for(i = 0; i < space->extent.rank; i++) {
             /* Encode start/stride/block/count */
-            UINT64ENCODE(*p, space->select.sel_info.hslab->opt_diminfo[i].start);
-            UINT64ENCODE(*p, space->select.sel_info.hslab->opt_diminfo[i].stride);
-            UINT64ENCODE(*p, space->select.sel_info.hslab->opt_diminfo[i].count);
-            UINT64ENCODE(*p, space->select.sel_info.hslab->opt_diminfo[i].block);
+            UINT64ENCODE(pp, space->select.sel_info.hslab->opt_diminfo[i].start);
+            UINT64ENCODE(pp, space->select.sel_info.hslab->opt_diminfo[i].stride);
+            UINT64ENCODE(pp, space->select.sel_info.hslab->opt_diminfo[i].count);
+            UINT64ENCODE(pp, space->select.sel_info.hslab->opt_diminfo[i].block);
         } /* end for */
     } /* end if */
     /* Check for a "regular" hyperslab selection */
@@ -2182,7 +2188,7 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t **p)
 
         /* Encode number of hyperslabs */
         H5_CHECK_OVERFLOW(block_count, hsize_t, uint32_t);
-        UINT32ENCODE(*p, (uint32_t)block_count);
+        UINT32ENCODE(pp, (uint32_t)block_count);
         len+=4;
 
         /* Now serialize the information for the regular hyperslab */
@@ -2205,11 +2211,11 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t **p)
 
                 /* Encode hyperslab starting location */
                 for(u = 0; u < ndims; u++)
-                    UINT32ENCODE(*p, (uint32_t)offset[u]);
+                    UINT32ENCODE(pp, (uint32_t)offset[u]);
 
                 /* Encode hyperslab ending location */
                 for(u = 0; u < ndims; u++)
-                    UINT32ENCODE(*p, (uint32_t)(offset[u] + (diminfo[u].block - 1)));
+                    UINT32ENCODE(pp, (uint32_t)(offset[u] + (diminfo[u].block - 1)));
 
                 /* Move the offset to the next sequence to start */
                 offset[fast_dim]+=diminfo[fast_dim].stride;
@@ -2260,7 +2266,7 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t **p)
         /* Encode number of hyperslabs */
         block_count = H5S_hyper_span_nblocks(space->select.sel_info.hslab->span_lst);
         H5_CHECK_OVERFLOW(block_count, hsize_t, uint32_t);
-        UINT32ENCODE(*p, (uint32_t)block_count);
+        UINT32ENCODE(pp, (uint32_t)block_count);
         len+=4;
 
         /* Add 8 bytes times the rank for each hyperslab selected */
@@ -2268,12 +2274,16 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t **p)
         len += (uint32_t)(8 * space->extent.rank * block_count);
 
         /* Encode each hyperslab in selection */
+        *p = pp;
         H5S_hyper_serialize_helper(space->select.sel_info.hslab->span_lst, start, end, (hsize_t)0, p);
     } /* end else */
 
     /* Encode length */
     UINT32ENCODE(lenp, (uint32_t)len);  /* Store the length of the extra information */
 
+    /* Update encoding pointer */
+    *p = pp;
+
     FUNC_LEAVE_NOAPI(SUCCEED)
 }   /* H5S_hyper_serialize() */
 
@@ -2306,6 +2316,7 @@ static herr_t
 H5S_hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t flags,
     const uint8_t **p)
 {
+    const uint8_t *pp = (*p);   /* Local pointer for decoding */
     unsigned rank;           	/* rank of points */
     size_t num_elem=0;      	/* number of elements in selection */
     hsize_t start[H5O_LAYOUT_NDIMS];	/* hyperslab start information */
@@ -2326,7 +2337,7 @@ H5S_hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t fla
     /* Check args */
     HDassert(space);
     HDassert(p);
-    HDassert(*p);
+    HDassert(pp);
 
     /* Deserialize slabs to select */
     /* (The header and rank have already beed decoded) */
@@ -2340,10 +2351,10 @@ H5S_hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t fla
         /* Iterate over dimensions */
         for(i = 0; i < space->extent.rank; i++) {
             /* Decode start/stride/block/count */
-            UINT64DECODE(*p, start[i]);
-            UINT64DECODE(*p, stride[i]);
-            UINT64DECODE(*p, count[i]);
-            UINT64DECODE(*p, block[i]);
+            UINT64DECODE(pp, start[i]);
+            UINT64DECODE(pp, stride[i]);
+            UINT64DECODE(pp, count[i]);
+            UINT64DECODE(pp, block[i]);
         } /* end for */
 
         /* Select the hyperslab to the current selection */
@@ -2352,7 +2363,7 @@ H5S_hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t fla
     } /* end if */
     else {
         /* decode the number of points */
-        UINT32DECODE(*p,num_elem);
+        UINT32DECODE(pp,num_elem);
 
         /* Set the count & stride for all blocks */
         for(tcount=count,tstride=stride,j=0; j<rank; j++,tstride++,tcount++) {
@@ -2364,11 +2375,11 @@ H5S_hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t fla
         for(i=0; i<num_elem; i++) {
             /* Decode the starting points */
             for(tstart=start,j=0; j<rank; j++,tstart++)
-                UINT32DECODE(*p, *tstart);
+                UINT32DECODE(pp, *tstart);
 
             /* Decode the ending points */
             for(tend=end,j=0; j<rank; j++,tend++)
-                UINT32DECODE(*p, *tend);
+                UINT32DECODE(pp, *tend);
 
             /* Change the ending points into blocks */
             for(tblock=block,tstart=start,tend=end,j=0; j<rank; j++,tstart++,tend++,tblock++)
@@ -2380,6 +2391,9 @@ H5S_hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t fla
         } /* end for */
     } /* end else */
 
+    /* Update decoding pointer */
+    *p = pp;
+
 done:
     FUNC_LEAVE_NOAPI(ret_value)
 }   /* H5S_hyper_deserialize() */
diff --git a/src/H5Snone.c b/src/H5Snone.c
index 2fbd44b..3492325 100644
--- a/src/H5Snone.c
+++ b/src/H5Snone.c
@@ -486,15 +486,23 @@ H5S_none_serial_size(const H5S_t H5_ATTR_UNUSED *space)
 static herr_t
 H5S_none_serialize(const H5S_t *space, uint8_t **p)
 {
+    uint8_t *pp = (*p);         /* Local pointer for decoding */
+
     FUNC_ENTER_NOAPI_NOINIT_NOERR
 
+    /* Check args */
     HDassert(space);
+    HDassert(p);
+    HDassert(pp);
 
     /* Store the preamble information */
-    UINT32ENCODE(*p, (uint32_t)H5S_GET_SELECT_TYPE(space));  /* Store the type of selection */
-    UINT32ENCODE(*p, (uint32_t)1);  /* Store the version number */
-    UINT32ENCODE(*p, (uint32_t)0);  /* Store the un-used padding */
-    UINT32ENCODE(*p, (uint32_t)0);  /* Store the additional information length */
+    UINT32ENCODE(pp, (uint32_t)H5S_GET_SELECT_TYPE(space));  /* Store the type of selection */
+    UINT32ENCODE(pp, (uint32_t)1);  /* Store the version number */
+    UINT32ENCODE(pp, (uint32_t)0);  /* Store the un-used padding */
+    UINT32ENCODE(pp, (uint32_t)0);  /* Store the additional information length */
+
+    /* Update encoding pointer */
+    *p = pp;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
 }   /* H5S_none_serialize() */
diff --git a/src/H5Spoint.c b/src/H5Spoint.c
index 1a14254..0f85110 100644
--- a/src/H5Spoint.c
+++ b/src/H5Spoint.c
@@ -826,28 +826,32 @@ H5S_point_serial_size (const H5S_t *space)
 static herr_t
 H5S_point_serialize (const H5S_t *space, uint8_t **p)
 {
-    H5S_pnt_node_t *curr;   /* Point information nodes */
-    uint8_t *lenp;          /* pointer to length location for later storage */
-    uint32_t len=0;         /* number of bytes used */
-    unsigned u;                /* local counting variable */
+    H5S_pnt_node_t *curr;       /* Point information nodes */
+    uint8_t *pp = (*p);         /* Local pointer for decoding */
+    uint8_t *lenp;              /* pointer to length location for later storage */
+    uint32_t len=0;             /* number of bytes used */
+    unsigned u;                 /* local counting variable */
 
     FUNC_ENTER_NOAPI_NOINIT_NOERR
 
+    /* Check args */
     HDassert(space);
+    HDassert(p);
+    HDassert(pp);
 
     /* Store the preamble information */
-    UINT32ENCODE(*p, (uint32_t)H5S_GET_SELECT_TYPE(space));  /* Store the type of selection */
-    UINT32ENCODE(*p, (uint32_t)1);  /* Store the version number */
-    UINT32ENCODE(*p, (uint32_t)0);  /* Store the un-used padding */
-    lenp=*p;           /* keep the pointer to the length location for later */
-    *p+=4;             /* skip over space for length */
+    UINT32ENCODE(pp, (uint32_t)H5S_GET_SELECT_TYPE(space));  /* Store the type of selection */
+    UINT32ENCODE(pp, (uint32_t)1);  /* Store the version number */
+    UINT32ENCODE(pp, (uint32_t)0);  /* Store the un-used padding */
+    lenp = pp;          /* Keep the pointer to the length location for later */
+    pp += 4;            /* Skip over space for length */
 
     /* Encode number of dimensions */
-    UINT32ENCODE(*p, (uint32_t)space->extent.rank);
+    UINT32ENCODE(pp, (uint32_t)space->extent.rank);
     len+=4;
 
     /* Encode number of elements */
-    UINT32ENCODE(*p, (uint32_t)space->select.num_elem);
+    UINT32ENCODE(pp, (uint32_t)space->select.num_elem);
     len+=4;
 
     /* Encode each point in selection */
@@ -858,7 +862,7 @@ H5S_point_serialize (const H5S_t *space, uint8_t **p)
 
         /* Encode each point */
         for(u=0; u<space->extent.rank; u++)
-            UINT32ENCODE(*p, (uint32_t)curr->pnt[u]);
+            UINT32ENCODE(pp, (uint32_t)curr->pnt[u]);
 
         curr=curr->next;
     } /* end while */
@@ -866,6 +870,9 @@ H5S_point_serialize (const H5S_t *space, uint8_t **p)
     /* Encode length */
     UINT32ENCODE(lenp, (uint32_t)len);  /* Store the length of the extra information */
 
+    /* Update encoding pointer */
+    *p = pp;
+
     FUNC_LEAVE_NOAPI(SUCCEED)
 }   /* H5S_point_serialize() */
 
@@ -898,24 +905,25 @@ static herr_t
 H5S_point_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t H5_ATTR_UNUSED flags,
     const uint8_t **p)
 {
-    H5S_seloper_t op=H5S_SELECT_SET;    /* Selection operation */
-    unsigned rank;          /* Rank of points */
-    size_t num_elem=0;      /* Number of elements in selection */
-    hsize_t *coord=NULL, *tcoord;   /* Pointer to array of elements */
+    H5S_seloper_t op = H5S_SELECT_SET;  /* Selection operation */
+    hsize_t *coord = NULL, *tcoord;     /* Pointer to array of elements */
+    const uint8_t *pp = (*p);   /* Local pointer for decoding */
+    size_t num_elem = 0;        /* Number of elements in selection */
+    unsigned rank;              /* Rank of points */
     unsigned i, j;              /* local counting variables */
-    herr_t ret_value = SUCCEED; /* return value */
+    herr_t ret_value = SUCCEED; /* Return value */
 
     FUNC_ENTER_NOAPI_NOINIT
 
     /* Check args */
     HDassert(space);
     HDassert(p);
-    HDassert(*p);
+    HDassert(pp);
 
     /* Deserialize points to select */
     /* (The header and rank have already beed decoded) */
     rank = space->extent.rank;  /* Retrieve rank from space */
-    UINT32DECODE(*p, num_elem); /* decode the number of points */
+    UINT32DECODE(pp, num_elem); /* decode the number of points */
 
     /* Allocate space for the coordinates */
     if(NULL == (coord = (hsize_t *)H5MM_malloc(num_elem * rank * sizeof(hsize_t))))
@@ -924,12 +932,15 @@ H5S_point_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t H5_
     /* Retrieve the coordinates from the buffer */
     for(tcoord = coord, i = 0; i < num_elem; i++)
         for(j = 0; j < (unsigned)rank; j++, tcoord++)
-            UINT32DECODE(*p, *tcoord);
+            UINT32DECODE(pp, *tcoord);
 
     /* Select points */
     if(H5S_select_elements(space, op, num_elem, (const hsize_t *)coord) < 0)
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't change selection")
 
+    /* Update decoding pointer */
+    *p = pp;
+
 done:
     /* Free the coordinate array if necessary */
     if(coord != NULL)