[svn-r27191] Merged r26781 to r27185 from trunk

Tested on: 64-bit Ubuntu Linux VM w/ gcc 4.8.2
    (C++ and Fortran 2003 also tested)

32 files changed, 284 insertions, 279 deletions

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 950b7cf..cb3361f 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -85,7 +85,7 @@ if (BUILD_SHARED_LIBS)
         TARGET     ${HDF5_TEST_PLUGIN_LIB_TARGET}
         POST_BUILD
         COMMAND    ${CMAKE_COMMAND}
-        ARGS       -E copy_if_different 
+        ARGS       -E copy_if_different
           "$<TARGET_FILE:${HDF5_TEST_PLUGIN_LIB_TARGET}>"
           "${CMAKE_BINARY_DIR}/testdir1/$<TARGET_FILE_NAME:${HDF5_TEST_PLUGIN_LIB_TARGET}>"
     )
@@ -116,7 +116,7 @@ if (BUILD_SHARED_LIBS)
         TARGET     ${HDF5_TEST_PLUGIN_LIB_TARGET}
         POST_BUILD
         COMMAND    ${CMAKE_COMMAND}
-        ARGS       -E copy_if_different 
+        ARGS       -E copy_if_different
           "$<TARGET_FILE:${HDF5_TEST_PLUGIN_LIB_TARGET}>"
           "${CMAKE_BINARY_DIR}/testdir2/$<TARGET_FILE_NAME:${HDF5_TEST_PLUGIN_LIB_TARGET}>"
     )
@@ -294,7 +294,7 @@ set_target_properties (links_env PROPERTIES FOLDER test)
 
 #-- Adding test for libinfo
 set (GREP_RUNNER ${PROJECT_BINARY_DIR}/GrepRunner.cmake)
-file (WRITE ${GREP_RUNNER} 
+file (WRITE ${GREP_RUNNER}
   "file (STRINGS \${TEST_PROGRAM} TEST_RESULT REGEX \"SUMMARY OF THE HDF5 CONFIGURATION\")
 if (\${TEST_RESULT} STREQUAL \"0\")
   message (FATAL_ERROR \"Failed: The output: \${TEST_RESULT} of \${TEST_PROGRAM} did not contain SUMMARY OF THE HDF5 CONFIGURATION\")
diff --git a/test/CMakeTests.cmake b/test/CMakeTests.cmake
index c630501..30e7318 100644
--- a/test/CMakeTests.cmake
+++ b/test/CMakeTests.cmake
@@ -204,7 +204,7 @@ endif (HDF5_TEST_VFD)
 add_test (
     NAME H5TEST-clear-testhdf5-objects
     COMMAND    ${CMAKE_COMMAND}
-        -E remove 
+        -E remove
         coord.h5
         dtypes10.h5
         sys_file1
@@ -259,7 +259,7 @@ else (HDF5_ENABLE_USING_MEMCHECKER)
       WORKING_DIRECTORY ${HDF5_TEST_BINARY_DIR}/H5TEST
   )
 endif (HDF5_ENABLE_USING_MEMCHECKER)
-  
+
 ##############################################################################
 ##############################################################################
 ###           T H E   T E S T S  M A C R O S                               ###
@@ -270,7 +270,7 @@ endif (HDF5_ENABLE_USING_MEMCHECKER)
 add_test (
     NAME H5TEST-clear-objects
     COMMAND    ${CMAKE_COMMAND}
-        -E remove 
+        -E remove
         dt_arith1.h5
         dt_arith2.h5
         dtransform.h5
@@ -336,9 +336,16 @@ add_test (
 )
 
 foreach (test ${H5_TESTS})
-  add_test (NAME H5TEST-${test} COMMAND $<TARGET_FILE:${test}>)
+  if (${test} STREQUAL "big" AND CYGWIN)
+    add_test (
+        NAME H5TEST-${test}
+        COMMAND ${CMAKE_COMMAND} -E echo "SKIP ${test}"
+    )
+  else (${test} STREQUAL "big" AND CYGWIN)
+    add_test (NAME H5TEST-${test} COMMAND $<TARGET_FILE:${test}>)
+  endif (${test} STREQUAL "big" AND CYGWIN)
   set_tests_properties (H5TEST-${test} PROPERTIES
-      DEPENDS H5TEST-clear-objects 
+      DEPENDS H5TEST-clear-objects
       ENVIRONMENT "srcdir=${HDF5_TEST_BINARY_DIR}/H5TEST"
       WORKING_DIRECTORY ${HDF5_TEST_BINARY_DIR}/H5TEST
   )
@@ -359,7 +366,7 @@ set_tests_properties (H5TEST-big PROPERTIES TIMEOUT 1800)
 add_test (
     NAME H5TEST-clear-cache-objects
     COMMAND    ${CMAKE_COMMAND}
-        -E remove 
+        -E remove
         cache_test.h5
     WORKING_DIRECTORY
         ${HDF5_TEST_BINARY_DIR}/H5TEST
@@ -375,14 +382,14 @@ set_tests_properties (H5TEST-cache PROPERTIES
 add_test (
     NAME H5TEST-clear-cache_api-objects
     COMMAND    ${CMAKE_COMMAND}
-        -E remove 
+        -E remove
         cache_api_test.h5
     WORKING_DIRECTORY
         ${HDF5_TEST_BINARY_DIR}/H5TEST
 )
 add_test (NAME H5TEST-cache_api COMMAND $<TARGET_FILE:cache_api>)
 set_tests_properties (H5TEST-cache_api PROPERTIES
-    DEPENDS H5TEST-clear-cache_api-objects 
+    DEPENDS H5TEST-clear-cache_api-objects
     ENVIRONMENT "srcdir=${HDF5_TEST_BINARY_DIR}/H5TEST"
     WORKING_DIRECTORY ${HDF5_TEST_BINARY_DIR}/H5TEST
 )
@@ -391,7 +398,7 @@ set_tests_properties (H5TEST-cache_api PROPERTIES
 add_test (
     NAME H5TEST-clear-cache_tagging-objects
     COMMAND    ${CMAKE_COMMAND}
-        -E remove 
+        -E remove
         tagging_test.h5
         tagging_ext_test.h5
     WORKING_DIRECTORY
@@ -408,7 +415,7 @@ set_tests_properties (H5TEST-cache_tagging PROPERTIES
 add_test (
     NAME H5TEST-clear-ttsafe-objects
     COMMAND    ${CMAKE_COMMAND}
-        -E remove 
+        -E remove
         ttsafe_error.h5
         ttsafe_dcreate.h5
         ttsafe_cancel.h5
@@ -428,7 +435,7 @@ if (HDF5_ENABLE_DEPRECATED_SYMBOLS)
   add_test (
       NAME H5TEST-clear-err_compat-objects
       COMMAND    ${CMAKE_COMMAND}
-          -E remove 
+          -E remove
           err_compat.txt
           err_compat.txt.err
       WORKING_DIRECTORY
@@ -455,7 +462,7 @@ endif (HDF5_ENABLE_DEPRECATED_SYMBOLS)
 add_test (
     NAME H5TEST-clear-error_test-objects
     COMMAND    ${CMAKE_COMMAND}
-        -E remove 
+        -E remove
         error_test.txt
         error_test.txt.err
     WORKING_DIRECTORY
@@ -471,7 +478,7 @@ add_test (NAME H5TEST-error_test COMMAND "${CMAKE_COMMAND}"
     -D "TEST_FOLDER=${PROJECT_BINARY_DIR}/H5TEST"
     -P "${HDF_RESOURCES_EXT_DIR}/runTest.cmake"
 )
-set_tests_properties (H5TEST-error_test PROPERTIES 
+set_tests_properties (H5TEST-error_test PROPERTIES
     DEPENDS H5TEST-clear-error_test-objects
     ENVIRONMENT "srcdir=${HDF5_TEST_BINARY_DIR}/H5TEST;HDF5_PLUGIN_PRELOAD=::"
     WORKING_DIRECTORY ${HDF5_TEST_BINARY_DIR}/H5TEST
@@ -483,7 +490,7 @@ add_test (
     COMMAND    ${CMAKE_COMMAND}
         -E remove
         links_env.txt
-        links_env.txt.err 
+        links_env.txt.err
         extlinks_env0.h5
         extlinks_env1.h5
         tmp/extlinks_env1.h5
@@ -611,7 +618,7 @@ if (HDF5_TEST_VFD)
       if (${vfdname} STREQUAL "multi" OR ${vfdname} STREQUAL "split")
         if (NOT BUILD_SHARED_LIBS AND NOT CMAKE_BUILD_TYPE MATCHES Debug)
           add_test (
-              NAME VFD-${vfdname}-${vfdtest} 
+              NAME VFD-${vfdname}-${vfdtest}
               COMMAND "${CMAKE_COMMAND}"
                   -D "TEST_PROGRAM=$<TARGET_FILE:${vfdtest}>"
                   -D "TEST_ARGS:STRING="
@@ -633,7 +640,7 @@ if (HDF5_TEST_VFD)
         endif(NOT BUILD_SHARED_LIBS AND NOT CMAKE_BUILD_TYPE MATCHES Debug)
       else (${vfdname} STREQUAL "multi" OR ${vfdname} STREQUAL "split")
         add_test (
-            NAME VFD-${vfdname}-${vfdtest} 
+            NAME VFD-${vfdname}-${vfdtest}
             COMMAND "${CMAKE_COMMAND}"
                 -D "TEST_PROGRAM=$<TARGET_FILE:${vfdtest}>"
                 -D "TEST_ARGS:STRING="
@@ -650,7 +657,7 @@ if (HDF5_TEST_VFD)
       endif (${vfdname} STREQUAL "multi" OR ${vfdname} STREQUAL "split")
     else (${vfdtest} STREQUAL "flush1" OR ${vfdtest} STREQUAL "flush2")
       add_test (
-          NAME VFD-${vfdname}-${vfdtest} 
+          NAME VFD-${vfdname}-${vfdtest}
           COMMAND "${CMAKE_COMMAND}"
               -D "TEST_PROGRAM=$<TARGET_FILE:${vfdtest}>"
               -D "TEST_ARGS:STRING="
@@ -673,7 +680,7 @@ if (HDF5_TEST_VFD)
         CHECK_VFD_TEST (${test} ${vfdname} ${resultcode})
       else (WIN32)
         add_test (
-          NAME VFD-${vfdname}-${test} 
+          NAME VFD-${vfdname}-${test}
           COMMAND "${CMAKE_COMMAND}"
               -D "TEST_PROGRAM=$<TARGET_FILE:${test}>"
               -D "TEST_ARGS:STRING="
@@ -694,7 +701,7 @@ if (HDF5_TEST_VFD)
     set_tests_properties (VFD-${vfdname}-flush2 PROPERTIES TIMEOUT 10)
     if (HDF5_TEST_FHEAP_VFD)
       add_test (
-        NAME VFD-${vfdname}-fheap 
+        NAME VFD-${vfdname}-fheap
         COMMAND "${CMAKE_COMMAND}"
             -D "TEST_PROGRAM=$<TARGET_FILE:fheap>"
             -D "TEST_ARGS:STRING="
@@ -711,7 +718,7 @@ if (HDF5_TEST_VFD)
       )
     endif (HDF5_TEST_FHEAP_VFD)
   ENDMACRO (ADD_VFD_TEST)
-  
+
   # Run test with different Virtual File Driver
   foreach (vfd ${VFD_LIST})
     ADD_VFD_TEST (${vfd} 0)
diff --git a/test/app_ref.c b/test/app_ref.c
index 611d255..3052df7 100644
--- a/test/app_ref.c
+++ b/test/app_ref.c
@@ -80,7 +80,7 @@ void Abrt_Handler (int sig);
 
 /* Handler for SIGABRT - prints the reference count on each id */
 void
-Abrt_Handler (int UNUSED sig)
+Abrt_Handler (int H5_ATTR_UNUSED sig)
 {
     int i, n;
 
diff --git a/test/cache.c b/test/cache.c
index eb17fcc..9bf225e 100644
--- a/test/cache.c
+++ b/test/cache.c
@@ -271,7 +271,7 @@ smoke_check_1(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    row_major_scan_forward(/* file_ptr              */ file_ptr,
+    row_major_scan_forward(/* file_ptr               */ file_ptr,
                            /* lag                    */ lag,
                            /* verbose                */ FALSE,
                            /* reset_stats            */ TRUE,
@@ -289,7 +289,7 @@ smoke_check_1(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    row_major_scan_backward(/* file_ptr              */ file_ptr,
+    row_major_scan_backward(/* file_ptr               */ file_ptr,
                             /* lag                    */ lag,
                             /* verbose                */ FALSE,
                             /* reset_stats            */ TRUE,
@@ -307,7 +307,7 @@ smoke_check_1(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    row_major_scan_forward(/* file_ptr              */ file_ptr,
+    row_major_scan_forward(/* file_ptr               */ file_ptr,
                            /* lag                    */ lag,
                            /* verbose                */ FALSE,
                            /* reset_stats            */ TRUE,
@@ -336,7 +336,7 @@ smoke_check_1(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    col_major_scan_forward(/* file_ptr              */ file_ptr,
+    col_major_scan_forward(/* file_ptr               */ file_ptr,
                            /* lag                    */ lag,
                            /* verbose                */ FALSE,
                            /* reset_stats            */ TRUE,
@@ -360,7 +360,7 @@ smoke_check_1(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    col_major_scan_backward(/* file_ptr              */ file_ptr,
+    col_major_scan_backward(/* file_ptr               */ file_ptr,
                             /* lag                    */ lag,
                             /* verbose                */ FALSE,
                             /* reset_stats            */ TRUE,
@@ -456,7 +456,7 @@ smoke_check_2(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    row_major_scan_forward(/* file_ptr              */ file_ptr,
+    row_major_scan_forward(/* file_ptr               */ file_ptr,
                            /* lag                    */ lag,
                            /* verbose                */ FALSE,
                            /* reset_stats            */ TRUE,
@@ -474,7 +474,7 @@ smoke_check_2(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    row_major_scan_backward(/* file_ptr              */ file_ptr,
+    row_major_scan_backward(/* file_ptr               */ file_ptr,
                             /* lag                    */ lag,
                             /* verbose                */ FALSE,
                             /* reset_stats            */ TRUE,
@@ -492,7 +492,7 @@ smoke_check_2(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    row_major_scan_forward(/* file_ptr              */ file_ptr,
+    row_major_scan_forward(/* file_ptr               */ file_ptr,
                            /* lag                    */ lag,
                            /* verbose                */ FALSE,
                            /* reset_stats            */ TRUE,
@@ -521,7 +521,7 @@ smoke_check_2(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    col_major_scan_forward(/* file_ptr              */ file_ptr,
+    col_major_scan_forward(/* file_ptr               */ file_ptr,
                            /* lag                    */ lag,
                            /* verbose                */ FALSE,
                            /* reset_stats            */ TRUE,
@@ -545,7 +545,7 @@ smoke_check_2(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    col_major_scan_backward(/* file_ptr              */ file_ptr,
+    col_major_scan_backward(/* file_ptr               */ file_ptr,
                             /* lag                    */ lag,
                             /* verbose                */ FALSE,
                             /* reset_stats            */ TRUE,
@@ -640,7 +640,7 @@ smoke_check_3(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    row_major_scan_forward(/* file_ptr              */ file_ptr,
+    row_major_scan_forward(/* file_ptr               */ file_ptr,
                            /* lag                    */ lag,
                            /* verbose                */ FALSE,
                            /* reset_stats            */ TRUE,
@@ -825,7 +825,7 @@ smoke_check_4(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    row_major_scan_forward(/* file_ptr              */ file_ptr,
+    row_major_scan_forward(/* file_ptr               */ file_ptr,
                            /* lag                    */ lag,
                            /* verbose                */ FALSE,
                            /* reset_stats            */ TRUE,
@@ -843,7 +843,7 @@ smoke_check_4(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    row_major_scan_backward(/* file_ptr              */ file_ptr,
+    row_major_scan_backward(/* file_ptr               */ file_ptr,
                             /* lag                    */ lag,
                             /* verbose                */ FALSE,
                             /* reset_stats            */ TRUE,
@@ -861,7 +861,7 @@ smoke_check_4(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    row_major_scan_forward(/* file_ptr              */ file_ptr,
+    row_major_scan_forward(/* file_ptr               */ file_ptr,
                            /* lag                    */ lag,
                            /* verbose                */ FALSE,
                            /* reset_stats            */ TRUE,
@@ -890,7 +890,7 @@ smoke_check_4(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    col_major_scan_forward(/* file_ptr              */ file_ptr,
+    col_major_scan_forward(/* file_ptr               */ file_ptr,
                            /* lag                    */ lag,
                            /* verbose                */ FALSE,
                            /* reset_stats            */ TRUE,
@@ -914,7 +914,7 @@ smoke_check_4(void)
         HDfprintf(stdout, "%s() - %0d -- pass = %d\n",
                   fcn_name, mile_stone++, (int)pass);
 
-    col_major_scan_backward(/* file_ptr              */ file_ptr,
+    col_major_scan_backward(/* file_ptr               */ file_ptr,
                             /* lag                    */ lag,
                             /* verbose                */ FALSE,
                             /* reset_stats            */ TRUE,
@@ -13206,8 +13206,8 @@ check_expunge_entry(void)
          */
 
         result = H5C_get_entry_status(file_ptr, entry_ptr->addr, &entry_size,
-                                      &in_cache, &is_dirty, &is_protected,
-				      &is_pinned, NULL, NULL);
+                                       &in_cache, &is_dirty, &is_protected,
+				       &is_pinned, NULL, NULL);
 
 	if ( result < 0 ) {
 
@@ -17341,14 +17341,14 @@ check_check_evictions_enabled_err(void)
 hbool_t rpt_fcn_called = FALSE;
 enum H5C_resize_status rpt_status;
 
-static void test_rpt_fcn(UNUSED H5C_t * cache_ptr,
-                  UNUSED int32_t version,
-                  UNUSED double hit_rate,
+static void test_rpt_fcn(H5_ATTR_UNUSED H5C_t * cache_ptr,
+                  H5_ATTR_UNUSED int32_t version,
+                  H5_ATTR_UNUSED double hit_rate,
                   enum H5C_resize_status status,
-                  UNUSED size_t old_max_cache_size,
-                  UNUSED size_t new_max_cache_size,
-                  UNUSED size_t old_min_clean_size,
-                  UNUSED size_t new_min_clean_size)
+                  H5_ATTR_UNUSED size_t old_max_cache_size,
+                  H5_ATTR_UNUSED size_t new_max_cache_size,
+                  H5_ATTR_UNUSED size_t old_min_clean_size,
+                  H5_ATTR_UNUSED size_t new_min_clean_size)
 {
     rpt_fcn_called = TRUE;
     rpt_status = status;
diff --git a/test/cache_common.c b/test/cache_common.c
index 7b1a158..12001b2 100644
--- a/test/cache_common.c
+++ b/test/cache_common.c
@@ -19,7 +19,6 @@
  *		This file contains common code for tests of the cache
  *		implemented in H5C.c
  */
-#include "H5private.h"          /* Put this first, so H5open() isn't invoked in public macros */
 #include "h5test.h"
 #include "H5Cprivate.h"
 #include "H5Iprivate.h"
@@ -365,7 +364,7 @@ const H5C_class_t types[NUMBER_OF_ENTRY_TYPES] =
 static herr_t clear(H5F_t * f, void * thing, hbool_t dest);
 static herr_t destroy(H5F_t * f, void * thing);
 static herr_t flush(H5F_t *f, hid_t dxpl_id, hbool_t dest,
-                    haddr_t addr, void *thing, unsigned UNUSED * flags_ptr);
+                    haddr_t addr, void *thing, unsigned H5_ATTR_UNUSED * flags_ptr);
 static void * load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *udata);
 static herr_t size(H5F_t * f, void * thing, size_t * size_ptr);
 static herr_t notify(H5C_notify_action_t action, void *thing);
@@ -478,8 +477,8 @@ addr_to_type_and_index(haddr_t addr,
  */
 
 herr_t
-check_write_permitted(const H5F_t UNUSED *f,
-                      hid_t UNUSED dxpl_id,
+check_write_permitted(const H5F_t H5_ATTR_UNUSED *f,
+                      hid_t H5_ATTR_UNUSED dxpl_id,
                       hbool_t *write_permitted_ptr)
 {
 
@@ -638,7 +637,7 @@ notify_clear(H5F_t * f, void *  thing, hbool_t dest)
  */
 
 herr_t
-destroy(H5F_t UNUSED * f,
+destroy(H5F_t H5_ATTR_UNUSED * f,
         void *         thing)
 {
     int i;
@@ -799,14 +798,13 @@ notify_dest(H5F_t * f, void *  thing)
  *
  *-------------------------------------------------------------------------
  */
-
 herr_t
 flush(H5F_t *f,
-      hid_t UNUSED dxpl_id,
+      hid_t H5_ATTR_UNUSED dxpl_id,
       hbool_t dest,
       haddr_t
 #ifdef NDEBUG
-          UNUSED
+          H5_ATTR_UNUSED
 #endif /* NDEBUG */
           addr,
       void *thing,
@@ -871,7 +869,6 @@ flush(H5F_t *f,
     }
 
     return(SUCCEED);
-
 } /* flush() */
 
 herr_t
@@ -962,7 +959,6 @@ notify_flush(H5F_t *f, hid_t dxpl_id, hbool_t dest, haddr_t addr,
     return(flush(f, dxpl_id, dest, addr, thing, flags_ptr));
 }
 
-
 
 /*-------------------------------------------------------------------------
  * Function:	load & friends
@@ -980,10 +976,10 @@ notify_flush(H5F_t *f, hid_t dxpl_id, hbool_t dest, haddr_t addr,
  */
 
 void *
-load(H5F_t UNUSED *f,
-     hid_t UNUSED dxpl_id,
+load(H5F_t H5_ATTR_UNUSED *f,
+     hid_t H5_ATTR_UNUSED dxpl_id,
      haddr_t addr,
-     void UNUSED *udata)
+     void H5_ATTR_UNUSED *udata)
 {
     int32_t type;
     int32_t idx;
@@ -1108,9 +1104,8 @@ notify_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *udata)
  *
  *-------------------------------------------------------------------------
  */
-
 herr_t
-size(H5F_t UNUSED *  f,
+size(H5F_t H5_ATTR_UNUSED *  f,
      void *   thing,
      size_t * size_ptr)
 {
@@ -1134,7 +1129,6 @@ size(H5F_t UNUSED *  f,
     *size_ptr = entry_ptr->size;
 
     return(SUCCEED);
-
 } /* size() */
 
 herr_t
diff --git a/test/dsets.c b/test/dsets.c
index e9dd2ce..8055d27 100644
--- a/test/dsets.c
+++ b/test/dsets.c
@@ -1224,7 +1224,7 @@ const H5Z_class2_t H5Z_BOGUS[1] = {{
  *-------------------------------------------------------------------------
  */
 static htri_t
-can_apply_bogus(hid_t UNUSED dcpl_id, hid_t type_id, hid_t UNUSED space_id)
+can_apply_bogus(hid_t H5_ATTR_UNUSED dcpl_id, hid_t type_id, hid_t H5_ATTR_UNUSED space_id)
 {
     if(H5Tequal(type_id,H5T_NATIVE_DOUBLE))
         return 0;
@@ -1250,9 +1250,9 @@ can_apply_bogus(hid_t UNUSED dcpl_id, hid_t type_id, hid_t UNUSED space_id)
  *-------------------------------------------------------------------------
  */
 static size_t
-filter_bogus(unsigned int UNUSED flags, size_t UNUSED cd_nelmts,
-      const unsigned int UNUSED *cd_values, size_t nbytes,
-      size_t UNUSED *buf_size, void UNUSED **buf)
+filter_bogus(unsigned int H5_ATTR_UNUSED flags, size_t H5_ATTR_UNUSED cd_nelmts,
+      const unsigned int H5_ATTR_UNUSED *cd_values, size_t nbytes,
+      size_t H5_ATTR_UNUSED *buf_size, void H5_ATTR_UNUSED **buf)
 {
     return nbytes;
 }
@@ -1274,7 +1274,7 @@ filter_bogus(unsigned int UNUSED flags, size_t UNUSED cd_nelmts,
  *-------------------------------------------------------------------------
  */
 static herr_t
-set_local_bogus2(hid_t dcpl_id, hid_t type_id, hid_t UNUSED space_id)
+set_local_bogus2(hid_t dcpl_id, hid_t type_id, hid_t H5_ATTR_UNUSED space_id)
 {
     unsigned add_on=0;      /* Value to add to data going through */
     unsigned flags;         /* Filter flags */
@@ -1381,9 +1381,9 @@ filter_bogus2(unsigned int flags, size_t cd_nelmts,
  *-------------------------------------------------------------------------
  */
 static size_t
-filter_bogus3(unsigned int UNUSED flags, size_t UNUSED cd_nelmts,
-      const unsigned int UNUSED *cd_values, size_t UNUSED nbytes,
-      size_t UNUSED *buf_size, void UNUSED **buf)
+filter_bogus3(unsigned int H5_ATTR_UNUSED flags, size_t H5_ATTR_UNUSED cd_nelmts,
+      const unsigned int H5_ATTR_UNUSED *cd_values, size_t H5_ATTR_UNUSED nbytes,
+      size_t H5_ATTR_UNUSED *buf_size, void H5_ATTR_UNUSED **buf)
 {
     return 0;
 }
@@ -1477,8 +1477,8 @@ error:
  *-------------------------------------------------------------------------
  */
 static H5Z_cb_return_t
-filter_cb_cont(H5Z_filter_t filter, void UNUSED *buf, size_t UNUSED buf_size,
-           void UNUSED *op_data)
+filter_cb_cont(H5Z_filter_t filter, void H5_ATTR_UNUSED *buf, size_t H5_ATTR_UNUSED buf_size,
+           void H5_ATTR_UNUSED *op_data)
 {
     if(H5Z_FILTER_FLETCHER32==filter)
        return H5Z_CB_CONT;
@@ -1500,8 +1500,8 @@ filter_cb_cont(H5Z_filter_t filter, void UNUSED *buf, size_t UNUSED buf_size,
  *-------------------------------------------------------------------------
  */
 static H5Z_cb_return_t
-filter_cb_fail(H5Z_filter_t filter, void UNUSED *buf, size_t UNUSED buf_size,
-           void UNUSED *op_data)
+filter_cb_fail(H5Z_filter_t filter, void H5_ATTR_UNUSED *buf, size_t H5_ATTR_UNUSED buf_size,
+           void H5_ATTR_UNUSED *op_data)
 {
     if(H5Z_FILTER_FLETCHER32==filter)
        return H5Z_CB_FAIL;
@@ -2069,7 +2069,7 @@ error:
 static herr_t
 test_filters(hid_t file, hid_t
 #ifndef H5_HAVE_FILTER_SZIP
-UNUSED
+H5_ATTR_UNUSED
 #endif /* H5_HAVE_FILTER_SZIP */
     fapl)
 {
@@ -5400,7 +5400,7 @@ error:
 static herr_t
 test_can_apply_szip(hid_t
 #ifndef H5_HAVE_FILTER_SZIP
-UNUSED
+H5_ATTR_UNUSED
 #endif /* H5_HAVE_FILTER_SZIP */
 file)
 {
@@ -6760,13 +6760,13 @@ error:
 #ifndef H5_NO_DEPRECATED_SYMBOLS
 /* Empty can_apply and set_local callbacks */
 static htri_t
-can_apply_deprec(hid_t UNUSED dcpl_id, hid_t UNUSED type_id, hid_t UNUSED space_id)
+can_apply_deprec(hid_t H5_ATTR_UNUSED dcpl_id, hid_t H5_ATTR_UNUSED type_id, hid_t H5_ATTR_UNUSED space_id)
 {
     return 1;
 }
 
 static herr_t
-set_local_deprec(hid_t UNUSED dcpl_id, hid_t UNUSED type_id, hid_t UNUSED space_id)
+set_local_deprec(hid_t H5_ATTR_UNUSED dcpl_id, hid_t H5_ATTR_UNUSED type_id, hid_t H5_ATTR_UNUSED space_id)
 {
     return(SUCCEED);
 }
@@ -7489,9 +7489,9 @@ static size_t filter_expand_factor_g = 0;
  *-------------------------------------------------------------------------
  */
 static size_t
-filter_expand(unsigned int flags, size_t UNUSED cd_nelmts,
-      const unsigned int UNUSED *cd_values, size_t nbytes,
-      size_t *buf_size, void UNUSED **buf)
+filter_expand(unsigned int flags, size_t H5_ATTR_UNUSED cd_nelmts,
+      const unsigned int H5_ATTR_UNUSED *cd_values, size_t nbytes,
+      size_t *buf_size, void H5_ATTR_UNUSED **buf)
 {
     size_t         ret_value = 0;
 
@@ -8890,8 +8890,8 @@ error:
  *-------------------------------------------------------------------------
  */
 static herr_t
-gather_error_cb_fail(const void UNUSED *dst_buf,
-    size_t UNUSED dst_buf_bytes_used, void UNUSED *op_data)
+gather_error_cb_fail(const void H5_ATTR_UNUSED *dst_buf,
+    size_t H5_ATTR_UNUSED dst_buf_bytes_used, void H5_ATTR_UNUSED *op_data)
 {
     return FAIL;
 }
diff --git a/test/dt_arith.c b/test/dt_arith.c
index c5b72d4..8ededc7 100644
--- a/test/dt_arith.c
+++ b/test/dt_arith.c
@@ -415,7 +415,7 @@ static int my_isinf(int endian, unsigned char *val, size_t size,
  *-------------------------------------------------------------------------
  */
 static void
-fpe_handler(int UNUSED signo)
+fpe_handler(int H5_ATTR_UNUSED signo)
 {
     SKIPPED();
     HDputs("    Test skipped due to SIGFPE.");
@@ -488,7 +488,7 @@ reset_hdf5(void)
  *-------------------------------------------------------------------------
  */
 static H5T_conv_ret_t
-except_func(H5T_conv_except_t except_type, hid_t UNUSED src_id, hid_t UNUSED dst_id, void UNUSED *src_buf,
+except_func(H5T_conv_except_t except_type, hid_t H5_ATTR_UNUSED src_id, hid_t H5_ATTR_UNUSED dst_id, void H5_ATTR_UNUSED *src_buf,
 		 void *dst_buf, void *user_data)
 {
     H5T_conv_ret_t      ret = H5T_CONV_HANDLED;
@@ -677,7 +677,7 @@ test_hard_query(void)
  *-------------------------------------------------------------------------
  */
 static H5T_conv_ret_t
-expt_handle(H5T_conv_except_t except_type, hid_t UNUSED src_id, hid_t UNUSED dst_id, void UNUSED *src_buf,
+expt_handle(H5T_conv_except_t except_type, hid_t H5_ATTR_UNUSED src_id, hid_t H5_ATTR_UNUSED dst_id, void H5_ATTR_UNUSED *src_buf,
 		 void *dst_buf, void *user_data)
 {
     signed char         fill_value1 = 7;
diff --git a/test/dtypes.c b/test/dtypes.c
index b2783c3..59cf000 100644
--- a/test/dtypes.c
+++ b/test/dtypes.c
@@ -4814,10 +4814,10 @@ test_bitfield_funcs(void)
  *-------------------------------------------------------------------------
  */
 static herr_t
-convert_opaque(hid_t UNUSED st, hid_t UNUSED dt, H5T_cdata_t *cdata,
-	       size_t UNUSED nelmts, size_t UNUSED buf_stride,
-               size_t UNUSED bkg_stride, void UNUSED *_buf,
-	       void UNUSED *bkg, hid_t UNUSED dset_xfer_plid)
+convert_opaque(hid_t H5_ATTR_UNUSED st, hid_t H5_ATTR_UNUSED dt, H5T_cdata_t *cdata,
+	       size_t H5_ATTR_UNUSED nelmts, size_t H5_ATTR_UNUSED buf_stride,
+               size_t H5_ATTR_UNUSED bkg_stride, void H5_ATTR_UNUSED *_buf,
+	       void H5_ATTR_UNUSED *bkg, hid_t H5_ATTR_UNUSED dset_xfer_plid)
 {
     if (H5T_CONV_CONV==cdata->command) num_opaque_conversions_g++;
     return 0;
@@ -5872,8 +5872,8 @@ typedef struct {
 } except_info_t;
 
 static H5T_conv_ret_t
-conv_except(H5T_conv_except_t except_type, hid_t UNUSED src_id, hid_t UNUSED dst_id,
-    void UNUSED *src_buf, void UNUSED *dst_buf, void *_user_data)
+conv_except(H5T_conv_except_t except_type, hid_t H5_ATTR_UNUSED src_id, hid_t H5_ATTR_UNUSED dst_id,
+    void H5_ATTR_UNUSED *src_buf, void H5_ATTR_UNUSED *dst_buf, void *_user_data)
 {
     except_info_t *user_data = (except_info_t *)_user_data;
 
diff --git a/test/earray.c b/test/earray.c
index 2135281..8a355c8 100644
--- a/test/earray.c
+++ b/test/earray.c
@@ -624,7 +624,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static earray_test_t *
-earray_cache_test_load(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, haddr_t UNUSED addr, const void UNUSED *udata1, void UNUSED *udata2)
+earray_cache_test_load(H5F_t H5_ATTR_UNUSED *f, hid_t H5_ATTR_UNUSED dxpl_id, haddr_t H5_ATTR_UNUSED addr, const void H5_ATTR_UNUSED *udata1, void H5_ATTR_UNUSED *udata2)
 {
     /* Check arguments */
     HDassert(f);
@@ -651,7 +651,7 @@ earray_cache_test_load(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, haddr_t UNUSED add
  *-------------------------------------------------------------------------
  */
 static herr_t
-earray_cache_test_flush(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, hbool_t destroy, haddr_t UNUSED addr, earray_test_t *test, unsigned UNUSED * flags_ptr)
+earray_cache_test_flush(H5F_t H5_ATTR_UNUSED *f, hid_t H5_ATTR_UNUSED dxpl_id, hbool_t destroy, haddr_t H5_ATTR_UNUSED addr, earray_test_t *test, unsigned H5_ATTR_UNUSED * flags_ptr)
 {
     /* check arguments */
     HDassert(f);
@@ -722,7 +722,7 @@ error:
  *-------------------------------------------------------------------------
  */
 herr_t
-earray_cache_test_dest(H5F_t UNUSED *f, earray_test_t *test)
+earray_cache_test_dest(H5F_t H5_ATTR_UNUSED *f, earray_test_t *test)
 {
     /*
      * Check arguments.
@@ -787,7 +787,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static herr_t
-earray_cache_test_size(const H5F_t UNUSED *f, const earray_test_t UNUSED *test, size_t *size_ptr)
+earray_cache_test_size(const H5F_t H5_ATTR_UNUSED *f, const earray_test_t H5_ATTR_UNUSED *test, size_t *size_ptr)
 {
     /* check arguments */
     HDassert(f);
@@ -816,7 +816,7 @@ earray_cache_test_size(const H5F_t UNUSED *f, const earray_test_t UNUSED *test,
  *-------------------------------------------------------------------------
  */
 static unsigned
-test_create(hid_t fapl, H5EA_create_t *cparam, earray_test_param_t UNUSED *tparam)
+test_create(hid_t fapl, H5EA_create_t *cparam, earray_test_param_t H5_ATTR_UNUSED *tparam)
 {
     hid_t	file = -1;              /* File ID */
     H5F_t	*f = NULL;              /* Internal file object pointer */
@@ -1394,7 +1394,7 @@ test_flush_depend_cb(const void *_elmt, size_t nelmts, void *udata)
  *-------------------------------------------------------------------------
  */
 static unsigned
-test_flush_depend(hid_t fapl, H5EA_create_t *cparam, earray_test_param_t UNUSED *tparam)
+test_flush_depend(hid_t fapl, H5EA_create_t *cparam, earray_test_param_t H5_ATTR_UNUSED *tparam)
 {
     hid_t	file = -1;              /* File ID */
     H5F_t	*f = NULL;              /* Internal file object pointer */
@@ -1629,8 +1629,8 @@ typedef struct eiter_fw_t {
  *-------------------------------------------------------------------------
  */
 static void *
-eiter_fw_init(const H5EA_create_t UNUSED *cparam, const earray_test_param_t UNUSED *tparam,
-    hsize_t UNUSED cnt)
+eiter_fw_init(const H5EA_create_t H5_ATTR_UNUSED *cparam, const earray_test_param_t H5_ATTR_UNUSED *tparam,
+    hsize_t H5_ATTR_UNUSED cnt)
 {
     eiter_fw_t *eiter;          /* Forward element iteration object */
 
@@ -2074,7 +2074,7 @@ typedef struct eiter_rnd_t {
  *-------------------------------------------------------------------------
  */
 static void *
-eiter_rnd_init(const H5EA_create_t UNUSED *cparam, const earray_test_param_t UNUSED *tparam,
+eiter_rnd_init(const H5EA_create_t H5_ATTR_UNUSED *cparam, const earray_test_param_t H5_ATTR_UNUSED *tparam,
     hsize_t cnt)
 {
     eiter_rnd_t *eiter;         /* Random element iteration object */
@@ -2227,7 +2227,7 @@ static const earray_iter_t ea_iter_rnd = {
  *-------------------------------------------------------------------------
  */
 static void *
-eiter_rnd2_init(const H5EA_create_t UNUSED *cparam, const earray_test_param_t UNUSED *tparam,
+eiter_rnd2_init(const H5EA_create_t H5_ATTR_UNUSED *cparam, const earray_test_param_t H5_ATTR_UNUSED *tparam,
     hsize_t cnt)
 {
     eiter_rnd_t *eiter;        /* Random element iteration object */
@@ -2311,7 +2311,7 @@ typedef struct eiter_cyc_t {
  *-------------------------------------------------------------------------
  */
 static void *
-eiter_cyc_init(const H5EA_create_t UNUSED *cparam, const earray_test_param_t UNUSED *tparam,
+eiter_cyc_init(const H5EA_create_t H5_ATTR_UNUSED *cparam, const earray_test_param_t H5_ATTR_UNUSED *tparam,
     hsize_t cnt)
 {
     eiter_cyc_t *eiter;         /* Cyclic element iteration object */
diff --git a/test/error_test.c b/test/error_test.c
index 0d945d2..e712d86 100644
--- a/test/error_test.c
+++ b/test/error_test.c
@@ -314,7 +314,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static herr_t
-long_desc_cb(unsigned UNUSED n, const H5E_error2_t *err_desc, void *client_data)
+long_desc_cb(unsigned H5_ATTR_UNUSED n, const H5E_error2_t *err_desc, void *client_data)
 {
     char *real_desc  = (char *)client_data;
 
diff --git a/test/farray.c b/test/farray.c
index 7a79aaa..4c18916 100644
--- a/test/farray.c
+++ b/test/farray.c
@@ -440,7 +440,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static unsigned
-test_create(hid_t fapl, H5FA_create_t *cparam, farray_test_param_t UNUSED *tparam)
+test_create(hid_t fapl, H5FA_create_t *cparam, farray_test_param_t H5_ATTR_UNUSED *tparam)
 {
     hid_t	file = -1;              /* File ID */
     H5F_t	*f = NULL;              /* Internal file object pointer */
@@ -852,8 +852,8 @@ typedef struct fiter_fw_t {
  *-------------------------------------------------------------------------
  */
 static void *
-fiter_fw_init(const H5FA_create_t UNUSED *cparam, const farray_test_param_t UNUSED *tparam,
-    hsize_t UNUSED cnt)
+fiter_fw_init(const H5FA_create_t H5_ATTR_UNUSED *cparam, const farray_test_param_t H5_ATTR_UNUSED *tparam,
+    hsize_t H5_ATTR_UNUSED cnt)
 {
     fiter_fw_t *fiter;          /* Forward element iteration object */
 
@@ -941,8 +941,8 @@ typedef struct fiter_rv_t {
  *-------------------------------------------------------------------------
  */
 static void *
-fiter_rv_init(const H5FA_create_t *cparam, const farray_test_param_t UNUSED *tparam,
-    hsize_t UNUSED cnt)
+fiter_rv_init(const H5FA_create_t *cparam, const farray_test_param_t H5_ATTR_UNUSED *tparam,
+    hsize_t H5_ATTR_UNUSED cnt)
 {
     fiter_rv_t *fiter;          /* Reverse element iteration object */
 
@@ -1008,7 +1008,7 @@ typedef struct fiter_rnd_t {
  *-------------------------------------------------------------------------
  */
 static void *
-fiter_rnd_init(const H5FA_create_t UNUSED *cparam, const farray_test_param_t UNUSED *tparam,
+fiter_rnd_init(const H5FA_create_t H5_ATTR_UNUSED *cparam, const farray_test_param_t H5_ATTR_UNUSED *tparam,
     hsize_t cnt)
 {
     fiter_rnd_t *fiter;         /* Random element iteration object */
@@ -1126,7 +1126,7 @@ typedef struct fiter_cyc_t {
  *-------------------------------------------------------------------------
  */
 static void *
-fiter_cyc_init(const H5FA_create_t UNUSED *cparam, const farray_test_param_t UNUSED *tparam,
+fiter_cyc_init(const H5FA_create_t H5_ATTR_UNUSED *cparam, const farray_test_param_t H5_ATTR_UNUSED *tparam,
     hsize_t cnt)
 {
     fiter_cyc_t *fiter;         /* Cyclic element iteration object */
diff --git a/test/fheap.c b/test/fheap.c
index 6bcd8bf..fee6fdf 100644
--- a/test/fheap.c
+++ b/test/fheap.c
@@ -1827,7 +1827,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static unsigned
-test_create(hid_t fapl, H5HF_create_t *cparam, fheap_test_param_t UNUSED *tparam)
+test_create(hid_t fapl, H5HF_create_t *cparam, fheap_test_param_t H5_ATTR_UNUSED *tparam)
 {
     hid_t	file = -1;              /* File ID */
     char	filename[FHEAP_FILENAME_LEN];         /* Filename to use */
@@ -1944,7 +1944,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static unsigned
-test_reopen(hid_t fapl, H5HF_create_t *cparam, fheap_test_param_t UNUSED *tparam)
+test_reopen(hid_t fapl, H5HF_create_t *cparam, fheap_test_param_t H5_ATTR_UNUSED *tparam)
 {
     hid_t	file = -1;              /* File ID */
     char	filename[FHEAP_FILENAME_LEN];         /* Filename to use */
@@ -2090,7 +2090,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static unsigned
-test_open_twice(hid_t fapl, H5HF_create_t *cparam, fheap_test_param_t UNUSED *tparam)
+test_open_twice(hid_t fapl, H5HF_create_t *cparam, fheap_test_param_t H5_ATTR_UNUSED *tparam)
 {
     hid_t	file = -1;              /* File ID */
     hid_t	file2 = -1;             /* File ID */
@@ -2262,7 +2262,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static unsigned
-test_delete_open(hid_t fapl, H5HF_create_t *cparam, fheap_test_param_t UNUSED *tparam)
+test_delete_open(hid_t fapl, H5HF_create_t *cparam, fheap_test_param_t H5_ATTR_UNUSED *tparam)
 {
     hid_t	file = -1;              /* File ID */
     char	filename[FHEAP_FILENAME_LEN];         /* Filename to use */
@@ -15884,9 +15884,9 @@ error:
 /* Custom filter used to verify that the filters are actually called and do not
  * just silently fail */
 static hbool_t test_write_filter_called;
-static size_t test_write_filter(unsigned int UNUSED flags, size_t UNUSED cd_nelmts,
-    const unsigned int UNUSED cd_values[], size_t nbytes, size_t UNUSED *buf_size,
-    void UNUSED **buf)
+static size_t test_write_filter(unsigned int H5_ATTR_UNUSED flags, size_t H5_ATTR_UNUSED cd_nelmts,
+    const unsigned int H5_ATTR_UNUSED cd_values[], size_t nbytes, size_t H5_ATTR_UNUSED *buf_size,
+    void H5_ATTR_UNUSED **buf)
 {
     test_write_filter_called = TRUE;
 
diff --git a/test/fillval.c b/test/fillval.c
index e7ad521..c791504 100644
--- a/test/fillval.c
+++ b/test/fillval.c
@@ -1301,7 +1301,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static int
-test_extend_release_integer(void UNUSED *_elmt)
+test_extend_release_integer(void H5_ATTR_UNUSED *_elmt)
 {
     return 0;
 } /* end test_extend_release_integer() */
diff --git a/test/filter_fail.c b/test/filter_fail.c
index 3dbb564..0b92abb 100644
--- a/test/filter_fail.c
+++ b/test/filter_fail.c
@@ -65,8 +65,8 @@ const H5Z_class2_t H5Z_FAIL_TEST[1] = {{
  *-------------------------------------------------------------------------
  */
 static size_t
-filter_fail(unsigned int flags, size_t UNUSED cd_nelmts,
-      const unsigned int UNUSED *cd_values, size_t nbytes,
+filter_fail(unsigned int flags, size_t H5_ATTR_UNUSED cd_nelmts,
+      const unsigned int H5_ATTR_UNUSED *cd_values, size_t nbytes,
       size_t *buf_size, void **buf)
 {
     int   *dst = (int*)(*buf);
diff --git a/test/freespace.c b/test/freespace.c
index 9ab0d75..1338ae7 100644
--- a/test/freespace.c
+++ b/test/freespace.c
@@ -85,8 +85,8 @@ typedef struct TEST_free_section_t {
 
 static herr_t TEST_sect_init_cls(H5FS_section_class_t *, void *);
 static herr_t TEST_sect_free(H5FS_section_info_t *_sect);
-static herr_t TEST_sect_can_merge(const H5FS_section_info_t *, const H5FS_section_info_t *, void UNUSED *);
-static herr_t TEST_sect_merging(H5FS_section_info_t *, H5FS_section_info_t *, void UNUSED *);
+static herr_t TEST_sect_can_merge(const H5FS_section_info_t *, const H5FS_section_info_t *, void H5_ATTR_UNUSED *);
+static herr_t TEST_sect_merging(H5FS_section_info_t *, H5FS_section_info_t *, void H5_ATTR_UNUSED *);
 static herr_t TEST_sect_can_shrink(const H5FS_section_info_t *, void *);
 static herr_t TEST_sect_shrinking(H5FS_section_info_t **, void *);
 
@@ -223,7 +223,7 @@ TEST_sect_init_cls(H5FS_section_class_t *cls, void *_udata)
  */
 static herr_t
 TEST_sect_can_merge(const H5FS_section_info_t *_sect1,
-    const H5FS_section_info_t *_sect2, void UNUSED *_udata)
+    const H5FS_section_info_t *_sect2, void H5_ATTR_UNUSED *_udata)
 {
     const TEST_free_section_t *sect1 = (const TEST_free_section_t *)_sect1;
     const TEST_free_section_t *sect2 = (const TEST_free_section_t *)_sect2;
@@ -246,7 +246,7 @@ TEST_sect_can_merge(const H5FS_section_info_t *_sect1,
  */
 static herr_t
 TEST_sect_merging(H5FS_section_info_t *_sect1, H5FS_section_info_t *_sect2,
-    void UNUSED *_udata)
+    void H5_ATTR_UNUSED *_udata)
 {
     TEST_free_section_t *sect1 = (TEST_free_section_t *)_sect1;
     TEST_free_section_t *sect2 = (TEST_free_section_t *)_sect2;
diff --git a/test/gen_filters.c b/test/gen_filters.c
index b44339d..f506602 100644
--- a/test/gen_filters.c
+++ b/test/gen_filters.c
@@ -123,9 +123,9 @@ const H5Z_class2_t H5Z_BOGUS[1] = {{
  *-------------------------------------------------------------------------
  */
 static size_t
-filter_bogus(unsigned int UNUSED flags, size_t UNUSED cd_nelmts,
-      const unsigned int UNUSED *cd_values, size_t nbytes,
-      size_t UNUSED *buf_size, void UNUSED **buf)
+filter_bogus(unsigned int H5_ATTR_UNUSED flags, size_t H5_ATTR_UNUSED cd_nelmts,
+      const unsigned int H5_ATTR_UNUSED *cd_values, size_t nbytes,
+      size_t H5_ATTR_UNUSED *buf_size, void H5_ATTR_UNUSED **buf)
 {
     return nbytes;
 }
diff --git a/test/h5test.c b/test/h5test.c
index 848712c..dc13a27 100644
--- a/test/h5test.c
+++ b/test/h5test.c
@@ -113,7 +113,7 @@ static char * h5_fixname_real(const char *base_name, hid_t fapl, const char *suf
  *-------------------------------------------------------------------------
  */
 static herr_t
-h5_errors(hid_t estack, void UNUSED *client_data)
+h5_errors(hid_t estack, void H5_ATTR_UNUSED *client_data)
 {
     H5_FAILED();
     H5Eprint2(estack, stdout);
@@ -725,21 +725,24 @@ h5_show_hostname(void)
 {
     char  hostname[80];
 #ifdef H5_HAVE_WIN32_API
-     WSADATA wsaData;
-     int err;
+    WSADATA wsaData;
+    int err;
 #endif
 
     /* try show the process or thread id in multiple processes cases*/
 #ifdef H5_HAVE_PARALLEL
     {
-  int mpi_rank, mpi_initialized;
-
-  MPI_Initialized(&mpi_initialized);
-  if (mpi_initialized){
-      MPI_Comm_rank(MPI_COMM_WORLD,&mpi_rank);
-      printf("MPI-process %d.", mpi_rank);
-  }else
-      printf("thread 0.");
+        int mpi_rank, mpi_initialized, mpi_finalized;
+
+        MPI_Initialized(&mpi_initialized);
+        MPI_Finalized(&mpi_finalized);
+
+        if(mpi_initialized && !mpi_finalized) {
+            MPI_Comm_rank(MPI_COMM_WORLD,&mpi_rank);
+            printf("MPI-process %d.", mpi_rank);
+        }
+        else
+            printf("thread 0.");
     }
 #elif defined(H5_HAVE_THREADSAFE)
     printf("thread %lu.", HDpthread_self_ulong());
@@ -748,31 +751,31 @@ h5_show_hostname(void)
 #endif
 #ifdef H5_HAVE_WIN32_API
 
-   err = WSAStartup( MAKEWORD(2,2), &wsaData );
-   if ( err != 0 ) {
-    /* could not find a usable WinSock DLL */
-    return;
-   }
-
-/* Confirm that the WinSock DLL supports 2.2.*/
-/* Note that if the DLL supports versions greater    */
-/* than 2.2 in addition to 2.2, it will still return */
-/* 2.2 in wVersion since that is the version we      */
-/* requested.                                        */
+    err = WSAStartup( MAKEWORD(2,2), &wsaData );
+    if ( err != 0 ) {
+        /* could not find a usable WinSock DLL */
+        return;
+    }
 
-   if ( LOBYTE( wsaData.wVersion ) != 2 ||
-        HIBYTE( wsaData.wVersion ) != 2 ) {
-    /* could not find a usable WinSock DLL */
-     WSACleanup( );
-     return;
-   }
+    /* Confirm that the WinSock DLL supports 2.2.*/
+    /* Note that if the DLL supports versions greater    */
+    /* than 2.2 in addition to 2.2, it will still return */
+    /* 2.2 in wVersion since that is the version we      */
+    /* requested.                                        */
+
+    if ( LOBYTE( wsaData.wVersion ) != 2 ||
+         HIBYTE( wsaData.wVersion ) != 2 ) {
+        /* could not find a usable WinSock DLL */
+        WSACleanup( );
+        return;
+    }
 
 #endif
 #ifdef H5_HAVE_GETHOSTNAME
     if (gethostname(hostname, (size_t)80) < 0)
-  printf(" gethostname failed\n");
+        printf(" gethostname failed\n");
     else
-  printf(" hostname=%s\n", hostname);
+        printf(" hostname=%s\n", hostname);
 #else
     printf(" gethostname not supported\n");
 #endif
@@ -1124,61 +1127,62 @@ int h5_szip_can_encode(void )
 char *
 getenv_all(MPI_Comm comm, int root, const char* name)
 {
-    int mpi_size, mpi_rank, mpi_initialized;
+    int mpi_size, mpi_rank, mpi_initialized, mpi_finalized;
     int len;
     static char* env = NULL;
 
     assert(name);
 
     MPI_Initialized(&mpi_initialized);
-    if(!mpi_initialized) {
-  /* use original getenv */
-  if(env)
-      HDfree(env);
-  env = HDgetenv(name);
-    } /* end if */
-    else {
-  MPI_Comm_rank(comm, &mpi_rank);
-  MPI_Comm_size(comm, &mpi_size);
-  assert(root < mpi_size);
-
-  /* The root task does the getenv call
-   * and sends the result to the other tasks */
-  if(mpi_rank == root) {
-      env = HDgetenv(name);
-      if(env) {
-    len = (int)HDstrlen(env);
-    MPI_Bcast(&len, 1, MPI_INT, root, comm);
-    MPI_Bcast(env, len, MPI_CHAR, root, comm);
-      }
-      else {
-    /* len -1 indicates that the variable was not in the environment */
-    len = -1;
-    MPI_Bcast(&len, 1, MPI_INT, root, comm);
-      }
-  }
-  else {
-      MPI_Bcast(&len, 1, MPI_INT, root, comm);
-      if(len >= 0) {
-    if(env == NULL)
-        env = (char*) HDmalloc((size_t)len+1);
-    else if(HDstrlen(env) < (size_t)len)
-        env = (char*) HDrealloc(env, (size_t)len+1);
-
-    MPI_Bcast(env, len, MPI_CHAR, root, comm);
-    env[len] = '\0';
-      }
-      else {
-    if(env)
-        HDfree(env);
-    env = NULL;
-      }
-  }
-    }
-
+    MPI_Finalized(&mpi_finalized);
+
+    if(mpi_initialized && !mpi_finalized) {
+        MPI_Comm_rank(comm, &mpi_rank);
+        MPI_Comm_size(comm, &mpi_size);
+        assert(root < mpi_size);
+
+        /* The root task does the getenv call
+         * and sends the result to the other tasks */
+        if(mpi_rank == root) {
+            env = HDgetenv(name);
+            if(env) {
+                len = (int)HDstrlen(env);
+                MPI_Bcast(&len, 1, MPI_INT, root, comm);
+                MPI_Bcast(env, len, MPI_CHAR, root, comm);
+            }
+            else {
+                /* len -1 indicates that the variable was not in the environment */
+                len = -1;
+                MPI_Bcast(&len, 1, MPI_INT, root, comm);
+            }
+        }
+        else {
+            MPI_Bcast(&len, 1, MPI_INT, root, comm);
+            if(len >= 0) {
+                if(env == NULL)
+                    env = (char*) HDmalloc((size_t)len+1);
+                else if(HDstrlen(env) < (size_t)len)
+                    env = (char*) HDrealloc(env, (size_t)len+1);
+
+                MPI_Bcast(env, len, MPI_CHAR, root, comm);
+                env[len] = '\0';
+            }
+            else {
+                if(env)
+                    HDfree(env);
+                env = NULL;
+            }
+        }
 #ifndef NDEBUG
-    MPI_Barrier(comm);
+        MPI_Barrier(comm);
 #endif
+    }
+    else {
+        /* use original getenv */
+        if(env)
+            HDfree(env);
+        env = HDgetenv(name);
+    } /* end if */
 
     return env;
 }
@@ -1247,8 +1251,8 @@ h5_make_local_copy(const char *origfilename, const char *local_copy_name)
  *-------------------------------------------------------------------------
  */
 static herr_t
-h5_verify_cached_stabs_cb(hid_t oid, const char UNUSED *name,
-    const H5O_info_t *oinfo, void UNUSED *udata)
+h5_verify_cached_stabs_cb(hid_t oid, const char H5_ATTR_UNUSED *name,
+    const H5O_info_t *oinfo, void H5_ATTR_UNUSED *udata)
 {
     if(oinfo->type == H5O_TYPE_GROUP)
         return(H5G__verify_cached_stabs_test(oid));
diff --git a/test/links.c b/test/links.c
index 0846c49..cfbc4a1 100644
--- a/test/links.c
+++ b/test/links.c
@@ -7320,8 +7320,8 @@ error:
 /* Callback functions for UD hard links. */
 /* UD_hard_create increments the object's reference count */
 static herr_t
-UD_hard_create(const char UNUSED * link_name, hid_t loc_group, const void *udata,
-    size_t udata_size, hid_t UNUSED lcpl_id)
+UD_hard_create(const char H5_ATTR_UNUSED * link_name, hid_t loc_group, const void *udata,
+    size_t udata_size, hid_t H5_ATTR_UNUSED lcpl_id)
 {
     haddr_t addr;
     hid_t target_obj = -1;
@@ -7389,8 +7389,8 @@ done:
 
 /* Traverse a hard link by opening the object */
 static hid_t
-UD_hard_traverse(const char UNUSED *link_name, hid_t cur_group,
-    const void *udata, size_t udata_size, hid_t UNUSED lapl_id)
+UD_hard_traverse(const char H5_ATTR_UNUSED *link_name, hid_t cur_group,
+    const void *udata, size_t udata_size, hid_t H5_ATTR_UNUSED lapl_id)
 {
     haddr_t addr;
     hid_t ret_value = -1;
@@ -7407,7 +7407,7 @@ UD_hard_traverse(const char UNUSED *link_name, hid_t cur_group,
 
 /* UD_hard_delete decrements the object's reference count */
 static herr_t
-UD_hard_delete(const char UNUSED * link_name, hid_t file, const void *udata,
+UD_hard_delete(const char H5_ATTR_UNUSED * link_name, hid_t file, const void *udata,
     size_t udata_size)
 {
     haddr_t addr;
@@ -7625,8 +7625,8 @@ ud_hard_links(hid_t fapl)
  * in the current group named REREG_TARGET_NAME
  */
 static hid_t
-UD_rereg_traverse(const char UNUSED * link_name, hid_t cur_group,
-    const void UNUSED *udata, size_t UNUSED udata_size, hid_t lapl_id)
+UD_rereg_traverse(const char H5_ATTR_UNUSED * link_name, hid_t cur_group,
+    const void H5_ATTR_UNUSED *udata, size_t H5_ATTR_UNUSED udata_size, hid_t lapl_id)
 {
     hid_t ret_value;
 
@@ -8064,8 +8064,8 @@ error:
  *-------------------------------------------------------------------------
  */
 static hid_t
-UD_plist_traverse(const char UNUSED * link_name, hid_t cur_group,
-    const void UNUSED *udata, size_t udata_size, hid_t lapl_id)
+UD_plist_traverse(const char H5_ATTR_UNUSED * link_name, hid_t cur_group,
+    const void H5_ATTR_UNUSED *udata, size_t udata_size, hid_t lapl_id)
 {
     char target[NAME_BUF_SIZE];
     hid_t ret_value;
@@ -8203,8 +8203,8 @@ lapl_udata(hid_t fapl, hbool_t new_format)
  *-------------------------------------------------------------------------
  */
 static herr_t
-UD_cbsucc_create(const char UNUSED * link_name, hid_t UNUSED loc_group,
-    const void *udata, size_t udata_size, hid_t UNUSED lcpl_id)
+UD_cbsucc_create(const char H5_ATTR_UNUSED * link_name, hid_t H5_ATTR_UNUSED loc_group,
+    const void *udata, size_t udata_size, hid_t H5_ATTR_UNUSED lcpl_id)
 {
     /* Check to make sure that this "soft link" has a target */
     if(udata_size < 1 || !udata)
@@ -8214,8 +8214,8 @@ UD_cbsucc_create(const char UNUSED * link_name, hid_t UNUSED loc_group,
 } /* end UD_cbsucc_create() */
 
 static hid_t
-UD_cbsucc_traverse(const char UNUSED *link_name, hid_t cur_group,
-    const void *udata, size_t UNUSED udata_size, hid_t lapl_id)
+UD_cbsucc_traverse(const char H5_ATTR_UNUSED *link_name, hid_t cur_group,
+    const void *udata, size_t H5_ATTR_UNUSED udata_size, hid_t lapl_id)
 {
     const char *target = (const char *)udata;
     hid_t ret_value;
@@ -8232,8 +8232,8 @@ error:
 
 /* Failure callback for when the link is moved or renamed */
 static herr_t
-UD_cbfail_move(const char UNUSED *new_name, hid_t UNUSED new_loc,
-    const void UNUSED *udata, size_t UNUSED udata_size)
+UD_cbfail_move(const char H5_ATTR_UNUSED *new_name, hid_t H5_ATTR_UNUSED new_loc,
+    const void H5_ATTR_UNUSED *udata, size_t H5_ATTR_UNUSED udata_size)
 {
     /* This traversal function will always fail. */
     return -1;
@@ -8241,8 +8241,8 @@ UD_cbfail_move(const char UNUSED *new_name, hid_t UNUSED new_loc,
 
 /* SuccessCallback for when the link is moved or renamed */
 static herr_t
-UD_cbsucc_move(const char UNUSED *new_name, hid_t UNUSED new_loc,
-    const void UNUSED *udata, size_t UNUSED udata_size)
+UD_cbsucc_move(const char H5_ATTR_UNUSED *new_name, hid_t H5_ATTR_UNUSED new_loc,
+    const void H5_ATTR_UNUSED *udata, size_t H5_ATTR_UNUSED udata_size)
 {
     /* This traversal function will always succeed. */
     return 0;
@@ -8250,8 +8250,8 @@ UD_cbsucc_move(const char UNUSED *new_name, hid_t UNUSED new_loc,
 
 /* Callback for when the link is deleted.  Also called during move */
 static herr_t
-UD_cbsucc_delete(const char UNUSED *link_name, hid_t UNUSED file,
-    const void UNUSED *udata, size_t UNUSED udata_size)
+UD_cbsucc_delete(const char H5_ATTR_UNUSED *link_name, hid_t H5_ATTR_UNUSED file,
+    const void H5_ATTR_UNUSED *udata, size_t H5_ATTR_UNUSED udata_size)
 {
     /* This callback will always succeed */
     return 0;
@@ -8259,8 +8259,8 @@ UD_cbsucc_delete(const char UNUSED *link_name, hid_t UNUSED file,
 
 /* Callback for when the link is deleted.  Also called during move */
 static herr_t
-UD_cbfail_delete(const char UNUSED *link_name, hid_t UNUSED file,
-    const void UNUSED *udata, size_t UNUSED udata_size)
+UD_cbfail_delete(const char H5_ATTR_UNUSED *link_name, hid_t H5_ATTR_UNUSED file,
+    const void H5_ATTR_UNUSED *udata, size_t H5_ATTR_UNUSED udata_size)
 {
     /* This traversal function will always fail. */
     /* Note: un-deletable links are in general a very bad idea! */
@@ -8269,8 +8269,8 @@ UD_cbfail_delete(const char UNUSED *link_name, hid_t UNUSED file,
 
 /* Callback for when the link is queried */
 static ssize_t
-UD_cbfail_query(const char UNUSED *link_name, const void UNUSED *udata,
-    size_t UNUSED udata_size, void UNUSED *buf, size_t UNUSED buf_size)
+UD_cbfail_query(const char H5_ATTR_UNUSED *link_name, const void H5_ATTR_UNUSED *udata,
+    size_t H5_ATTR_UNUSED udata_size, void H5_ATTR_UNUSED *buf, size_t H5_ATTR_UNUSED buf_size)
 {
     /* This traversal function will always fail. */
     return -1;
@@ -8278,8 +8278,8 @@ UD_cbfail_query(const char UNUSED *link_name, const void UNUSED *udata,
 
 /* Callback for when the link is queried */
 static ssize_t
-UD_cbfail_on_write_query(const char UNUSED *link_name, const void UNUSED *udata,
-    size_t UNUSED udata_size, void *buf, size_t UNUSED buf_size)
+UD_cbfail_on_write_query(const char H5_ATTR_UNUSED *link_name, const void H5_ATTR_UNUSED *udata,
+    size_t H5_ATTR_UNUSED udata_size, void *buf, size_t H5_ATTR_UNUSED buf_size)
 {
     /* This traversal function will return a buffer size,
      * but will fail when a buffer is passed in ("writing to the buffer"
@@ -8294,8 +8294,8 @@ UD_cbfail_on_write_query(const char UNUSED *link_name, const void UNUSED *udata,
 
 /* Callback for when the link is queried */
 static ssize_t
-UD_cbsucc_query(const char UNUSED *link_name, const void UNUSED *udata,
-    size_t UNUSED udata_size, void *buf, size_t buf_size)
+UD_cbsucc_query(const char H5_ATTR_UNUSED *link_name, const void H5_ATTR_UNUSED *udata,
+    size_t H5_ATTR_UNUSED udata_size, void *buf, size_t buf_size)
 {
     /* This traversal function will return a buffer size,
      * but will fail when a buffer is passed in ("writing to the buffer"
@@ -9007,7 +9007,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static int
-visit_link_cb(hid_t UNUSED group_id, const char *name, const H5L_info_t *linfo,
+visit_link_cb(hid_t H5_ATTR_UNUSED group_id, const char *name, const H5L_info_t *linfo,
     void *_op_data)
 {
     lvisit_ud_t *op_data = (lvisit_ud_t *)_op_data;
@@ -9185,7 +9185,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static int
-visit_obj_cb(hid_t UNUSED group_id, const char *name, const H5O_info_t *oinfo,
+visit_obj_cb(hid_t H5_ATTR_UNUSED group_id, const char *name, const H5O_info_t *oinfo,
     void *_op_data)
 {
     ovisit_ud_t *op_data = (ovisit_ud_t *)_op_data;
@@ -9363,7 +9363,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static int
-visit_obj_stop_cb(hid_t UNUSED group_id, const char UNUSED *name, const H5O_info_t UNUSED *oinfo,
+visit_obj_stop_cb(hid_t H5_ATTR_UNUSED group_id, const char H5_ATTR_UNUSED *name, const H5O_info_t H5_ATTR_UNUSED *oinfo,
     void *_op_data)
 {
     unsigned *op_data = (unsigned *)_op_data;
@@ -9489,8 +9489,8 @@ static herr_t link_filter_set_local(hid_t dcpl_id, hid_t type_id, hid_t space_id
 } /* end link_filter_set_local */
 
 static size_t link_filter_filter(unsigned int flags, size_t cd_nelmts,
-    const unsigned int cd_values[], size_t nbytes, size_t UNUSED *buf_size,
-    void UNUSED **buf)
+    const unsigned int cd_values[], size_t nbytes, size_t H5_ATTR_UNUSED *buf_size,
+    void H5_ATTR_UNUSED **buf)
 {
     if(flags & H5Z_FLAG_OPTIONAL || cd_nelmts != 1 || cd_values[0] != 2112)
         return 0;
@@ -11990,8 +11990,8 @@ group_iterate_cb(hid_t group_id, const char *link_name, void *_op_data)
  *-------------------------------------------------------------------------
  */
 static int
-link_iterate_fail_cb(hid_t UNUSED group_id, const char UNUSED *link_name,
-    const H5L_info_t UNUSED *info, void UNUSED *_op_data)
+link_iterate_fail_cb(hid_t H5_ATTR_UNUSED group_id, const char H5_ATTR_UNUSED *link_name,
+    const H5L_info_t H5_ATTR_UNUSED *info, void H5_ATTR_UNUSED *_op_data)
 {
     return(H5_ITER_ERROR);
 } /* end link_iterate_fail_cb() */
diff --git a/test/objcopy.c b/test/objcopy.c
index 71a7236..e84e70c 100644
--- a/test/objcopy.c
+++ b/test/objcopy.c
@@ -11449,7 +11449,7 @@ error:
  */
 static herr_t
 test_copy_iterate_cb(hid_t loc_id, const char *name,
-    const H5L_info_t UNUSED *link_info, void *op_data)
+    const H5L_info_t H5_ATTR_UNUSED *link_info, void *op_data)
 {
     hid_t dst_loc_id = *((hid_t *)op_data);
 
diff --git a/test/tattr.c b/test/tattr.c
index 31a3844..9429f31 100644
--- a/test/tattr.c
+++ b/test/tattr.c
@@ -1392,7 +1392,7 @@ test_attr_mult_read(hid_t fapl)
 **
 ****************************************************************/
 static herr_t
-attr_op1(hid_t UNUSED loc_id, const char *name, const H5A_info_t UNUSED *ainfo,
+attr_op1(hid_t H5_ATTR_UNUSED loc_id, const char *name, const H5A_info_t H5_ATTR_UNUSED *ainfo,
     void *op_data)
 {
     int *count = (int *)op_data;
@@ -6508,8 +6508,8 @@ attr_iterate1_cb(hid_t loc_id, const char *attr_name, void *_op_data)
  *-------------------------------------------------------------------------
  */
 static int
-attr_iterate2_fail_cb(hid_t UNUSED group_id, const char UNUSED *attr_name,
-    const H5A_info_t UNUSED *info, void UNUSED *_op_data)
+attr_iterate2_fail_cb(hid_t H5_ATTR_UNUSED group_id, const char H5_ATTR_UNUSED *attr_name,
+    const H5A_info_t H5_ATTR_UNUSED *info, void H5_ATTR_UNUSED *_op_data)
 {
     return(H5_ITER_ERROR);
 } /* end attr_iterate2_fail_cb() */
diff --git a/test/tcheck_version.c b/test/tcheck_version.c
index 91d98ef..a75d642 100644
--- a/test/tcheck_version.c
+++ b/test/tcheck_version.c
@@ -36,7 +36,7 @@
 /* prototypes */
 void showhelp(void);
 void parse(int ac, char **av);
-void abort_intercept (int UNUSED sig);
+void abort_intercept (int H5_ATTR_UNUSED sig);
 
 /* global variables */
 unsigned	major = H5_VERS_MAJOR;
@@ -105,7 +105,7 @@ parse(int ac, char **av)
  * This tries to eliminate those side effects.
  */
 void
-abort_intercept (int UNUSED sig)
+abort_intercept (int H5_ATTR_UNUSED sig)
 {
     HDexit(6);
 }
diff --git a/test/tgenprop.c b/test/tgenprop.c
index a3f1752..bf4f3fa 100644
--- a/test/tgenprop.c
+++ b/test/tgenprop.c
@@ -385,7 +385,7 @@ test_genprop_cls_crt_cb1(hid_t list_id, void *create_data)
 }
 
 static herr_t
-test_genprop_cls_cpy_cb1(hid_t new_list_id, hid_t UNUSED old_list_id, void *copy_data)
+test_genprop_cls_cpy_cb1(hid_t new_list_id, hid_t H5_ATTR_UNUSED old_list_id, void *copy_data)
 {
     struct {                /* Struct for iterations */
         int count;
@@ -993,7 +993,7 @@ prop_cb_info prop3_cb_info;     /* Callback statistics for property #3 */
 **
 ****************************************************************/
 static herr_t
-test_genprop_cls_cpy_cb2(hid_t new_list_id, hid_t UNUSED old_list_id, void *create_data)
+test_genprop_cls_cpy_cb2(hid_t new_list_id, hid_t H5_ATTR_UNUSED old_list_id, void *create_data)
 {
     struct {                /* Struct for iterations */
         int count;
diff --git a/test/tid.c b/test/tid.c
index 8c64b79..85d26c9 100644
--- a/test/tid.c
+++ b/test/tid.c
@@ -239,7 +239,7 @@ out:
 
 
 	/* A dummy search function for the next test */
-static int test_search_func(void UNUSED * ptr1, void UNUSED * ptr2) { return 0; }
+static int test_search_func(void H5_ATTR_UNUSED * ptr1, void H5_ATTR_UNUSED * ptr2) { return 0; }
 
 	/* Ensure that public functions cannot access "predefined" ID types */
 static int id_predefined_test(void )
diff --git a/test/titerate.c b/test/titerate.c
index 049e258..fff13f1 100644
--- a/test/titerate.c
+++ b/test/titerate.c
@@ -83,7 +83,7 @@ int iter_strcmp(const void *s1, const void *s2)
 **
 ****************************************************************/
 static herr_t
-liter_cb(hid_t UNUSED group, const char *name, const H5L_info_t UNUSED *link_info,
+liter_cb(hid_t H5_ATTR_UNUSED group, const char *name, const H5L_info_t H5_ATTR_UNUSED *link_info,
     void *op_data)
 {
     iter_info *info = (iter_info *)op_data;
@@ -344,7 +344,7 @@ test_iter_group(hid_t fapl, hbool_t new_format)
 **
 ****************************************************************/
 herr_t
-aiter_cb(hid_t UNUSED group, const char *name, const H5A_info_t UNUSED *ainfo,
+aiter_cb(hid_t H5_ATTR_UNUSED group, const char *name, const H5A_info_t H5_ATTR_UNUSED *ainfo,
     void *op_data)
 {
     iter_info *info = (iter_info *)op_data;
@@ -538,7 +538,7 @@ int iter_strcmp2(const void *s1, const void *s2)
 **
 ****************************************************************/
 static herr_t
-liter_cb2(hid_t loc_id, const char *name, const H5L_info_t UNUSED *link_info,
+liter_cb2(hid_t loc_id, const char *name, const H5L_info_t H5_ATTR_UNUSED *link_info,
     void *opdata)
 {
     const iter_info *test_info = (const iter_info *)opdata;
diff --git a/test/tmisc.c b/test/tmisc.c
index 869557c..e9b5680 100644
--- a/test/tmisc.c
+++ b/test/tmisc.c
@@ -5137,8 +5137,8 @@ test_misc29(void)
 
 
 static int
-test_misc30_get_info_cb(hid_t loc_id, const char *name, const H5L_info_t UNUSED *info,
-    void UNUSED *op_data)
+test_misc30_get_info_cb(hid_t loc_id, const char *name, const H5L_info_t H5_ATTR_UNUSED *info,
+    void H5_ATTR_UNUSED *op_data)
 {
     H5O_info_t object_info;
 
diff --git a/test/trefer.c b/test/trefer.c
index 6d72aee..203b602 100644
--- a/test/trefer.c
+++ b/test/trefer.c
@@ -1232,7 +1232,7 @@ test_reference_obj_deleted(void)
 **
 ****************************************************************/
 static herr_t
-test_deref_iter_op(hid_t UNUSED group, const char *name, const H5L_info_t UNUSED *info,
+test_deref_iter_op(hid_t H5_ATTR_UNUSED group, const char *name, const H5L_info_t H5_ATTR_UNUSED *info,
     void *op_data)
 {
     int *count = (int *)op_data;        /* Pointer to name counter */
diff --git a/test/tselect.c b/test/tselect.c
index 5190223..24a9274 100644
--- a/test/tselect.c
+++ b/test/tselect.c
@@ -186,7 +186,7 @@ static herr_t test_select_hyper_iter3(void *elem,hid_t type_id, unsigned ndim, c
 **
 ****************************************************************/
 static herr_t
-test_select_hyper_iter1(void *_elem, hid_t UNUSED type_id, unsigned UNUSED ndim, const hsize_t UNUSED *point, void *_operator_data)
+test_select_hyper_iter1(void *_elem, hid_t H5_ATTR_UNUSED type_id, unsigned H5_ATTR_UNUSED ndim, const hsize_t H5_ATTR_UNUSED *point, void *_operator_data)
 {
     uint8_t *tbuf=(uint8_t *)_elem,     /* temporary buffer pointer */
             **tbuf2=(uint8_t **)_operator_data; /* temporary buffer handle */
@@ -385,7 +385,7 @@ struct pnt_iter {
 **
 ****************************************************************/
 static herr_t
-test_select_point_iter1(void *_elem, hid_t UNUSED type_id, unsigned UNUSED ndim, const hsize_t UNUSED *point, void *_operator_data)
+test_select_point_iter1(void *_elem, hid_t H5_ATTR_UNUSED type_id, unsigned H5_ATTR_UNUSED ndim, const hsize_t H5_ATTR_UNUSED *point, void *_operator_data)
 {
     uint8_t *elem=(uint8_t *)_elem;  /* Pointer to the element to examine */
     uint8_t *tmp;                       /* temporary ptr to element in operator data */
@@ -662,7 +662,7 @@ test_select_point(hid_t xfer_plist)
 **
 ****************************************************************/
 static herr_t
-test_select_all_iter1(void *_elem, hid_t UNUSED type_id, unsigned UNUSED ndim, const hsize_t UNUSED *point, void *_operator_data)
+test_select_all_iter1(void *_elem, hid_t H5_ATTR_UNUSED type_id, unsigned H5_ATTR_UNUSED ndim, const hsize_t H5_ATTR_UNUSED *point, void *_operator_data)
 {
     uint8_t *tbuf=(uint8_t *)_elem,     /* temporary buffer pointer */
             **tbuf2=(uint8_t **)_operator_data; /* temporary buffer handle */
@@ -682,7 +682,7 @@ test_select_all_iter1(void *_elem, hid_t UNUSED type_id, unsigned UNUSED ndim, c
 **
 ****************************************************************/
 static herr_t
-test_select_none_iter1(void UNUSED *_elem, hid_t UNUSED type_id, unsigned UNUSED ndim, const hsize_t UNUSED *point, void UNUSED *_operator_data)
+test_select_none_iter1(void H5_ATTR_UNUSED *_elem, hid_t H5_ATTR_UNUSED type_id, unsigned H5_ATTR_UNUSED ndim, const hsize_t H5_ATTR_UNUSED *point, void H5_ATTR_UNUSED *_operator_data)
 {
     return(-1);
 }   /* end test_select_none_iter1() */
@@ -5816,7 +5816,7 @@ test_select_hyper_nota_2d(void)
 **
 ****************************************************************/
 static herr_t
-test_select_hyper_iter2(void *_elem, hid_t UNUSED type_id, unsigned ndim, const hsize_t *point, void *_operator_data)
+test_select_hyper_iter2(void *_elem, hid_t H5_ATTR_UNUSED type_id, unsigned ndim, const hsize_t *point, void *_operator_data)
 {
     int *tbuf=(int *)_elem,     /* temporary buffer pointer */
         **tbuf2=(int **)_operator_data; /* temporary buffer handle */
@@ -7008,7 +7008,7 @@ typedef struct {
 **
 ****************************************************************/
 static herr_t
-test_select_hyper_iter3(void *_elem, hid_t UNUSED type_id, unsigned ndim, const hsize_t *point, void *_operator_data)
+test_select_hyper_iter3(void *_elem, hid_t H5_ATTR_UNUSED type_id, unsigned ndim, const hsize_t *point, void *_operator_data)
 {
     unsigned *tbuf = (unsigned *)_elem;     /* temporary buffer pointer */
     fill_iter_info *iter_info = (fill_iter_info *)_operator_data; /* Get the pointer to the iterator information */
diff --git a/test/tskiplist.c b/test/tskiplist.c
index 8966e39..07e63fd 100644
--- a/test/tskiplist.c
+++ b/test/tskiplist.c
@@ -592,7 +592,7 @@ test_skiplist_string(void)
 } /* end test_skiplist_string() */
 
 static herr_t
-test_skiplist_iter(void *item, void UNUSED *key, void *op_data)
+test_skiplist_iter(void *item, void H5_ATTR_UNUSED *key, void *op_data)
 {
     size_t *up=(size_t *)op_data;
 
@@ -1070,7 +1070,7 @@ test_skiplist_add(void)
 } /* end test_skiplist_add() */
 
 static herr_t
-test_skiplist_destroy_free(void *item, void UNUSED *key, void *op_data)
+test_skiplist_destroy_free(void *item, void H5_ATTR_UNUSED *key, void *op_data)
 {
     unsigned *free_count=(unsigned *)op_data;
 
diff --git a/test/ttsafe_cancel.c b/test/ttsafe_cancel.c
index d8ed462..9bbec34 100644
--- a/test/ttsafe_cancel.c
+++ b/test/ttsafe_cancel.c
@@ -120,7 +120,7 @@ void tts_cancel(void)
     assert(ret==0);
 }
 
-void *tts_cancel_thread(void UNUSED *arg)
+void *tts_cancel_thread(void H5_ATTR_UNUSED *arg)
 {
     int datavalue;
     int buffer;
@@ -182,8 +182,8 @@ void *tts_cancel_thread(void UNUSED *arg)
     return NULL;
 }
 
-herr_t tts_cancel_callback(void *elem, hid_t UNUSED type_id, unsigned UNUSED ndim,
-			   const hsize_t UNUSED *point, void *operator_data)
+herr_t tts_cancel_callback(void *elem, hid_t H5_ATTR_UNUSED type_id, unsigned H5_ATTR_UNUSED ndim,
+			   const hsize_t H5_ATTR_UNUSED *point, void *operator_data)
 {
     int value = *(int *)elem;
     hid_t dataset = *(hid_t *)operator_data;
diff --git a/test/ttsafe_error.c b/test/ttsafe_error.c
index b81a7ad..e143263 100644
--- a/test/ttsafe_error.c
+++ b/test/ttsafe_error.c
@@ -154,7 +154,7 @@ void tts_error(void)
 }
 
 static
-void *tts_error_thread(void UNUSED *arg)
+void *tts_error_thread(void H5_ATTR_UNUSED *arg)
 {
     hid_t dataspace, datatype, dataset;
     hsize_t dimsf[1]; /* dataset dimensions */
@@ -199,7 +199,7 @@ void *tts_error_thread(void UNUSED *arg)
 }
 
 static
-herr_t error_callback(hid_t UNUSED estack_id, void *client_data)
+herr_t error_callback(hid_t H5_ATTR_UNUSED estack_id, void *client_data)
 {
     H5TS_mutex_lock_simple(&error_mutex);
     error_count++;
@@ -208,7 +208,7 @@ herr_t error_callback(hid_t UNUSED estack_id, void *client_data)
 }
 
 static
-herr_t walk_error_callback(unsigned n, const H5E_error2_t *err_desc, void UNUSED *client_data)
+herr_t walk_error_callback(unsigned n, const H5E_error2_t *err_desc, void H5_ATTR_UNUSED *client_data)
 {
     hid_t maj_num, min_num;
 
diff --git a/test/tunicode.c b/test/tunicode.c
index 82dc429..93c00c5 100644
--- a/test/tunicode.c
+++ b/test/tunicode.c
@@ -119,7 +119,7 @@ void test_fl_string(hid_t fid, const char *string)
  * Borrows heavily from dtypes.c, but is more complicated because
  * the string is randomly generated.
  */
-void test_strpad(hid_t UNUSED fid, const char *string)
+void test_strpad(hid_t H5_ATTR_UNUSED fid, const char *string)
 {
     /* buf is used to hold the data that H5Tconvert operates on. */
     char     buf[LONG_BUF_SIZE];
@@ -650,7 +650,7 @@ void test_compound(hid_t fid, const char * string)
  * test_enum
  * Test that enumerated datatypes can have UTF-8 member names.
  */
-void test_enum(hid_t UNUSED fid, const char * string)
+void test_enum(hid_t H5_ATTR_UNUSED fid, const char * string)
 {
   /* Define an enumerated type */
   typedef enum {
@@ -699,7 +699,7 @@ void test_enum(hid_t UNUSED fid, const char * string)
  * test_opaque
  * Test comments on opaque datatypes
  */
-void test_opaque(hid_t UNUSED fid, const char * string)
+void test_opaque(hid_t H5_ATTR_UNUSED fid, const char * string)
 {
   hid_t type_id;
   char * read_buf;
diff --git a/test/unregister.c b/test/unregister.c
index 383958d..be40383 100644
--- a/test/unregister.c
+++ b/test/unregister.c
@@ -68,9 +68,9 @@ const H5Z_class2_t H5Z_DUMMY[1] = {{
  *-------------------------------------------------------------------------
  */
 static size_t
-filter_dummy(unsigned int UNUSED flags, size_t UNUSED cd_nelmts,
-      const unsigned int UNUSED *cd_values, size_t nbytes,
-      size_t UNUSED *buf_size, void UNUSED **buf)
+filter_dummy(unsigned int H5_ATTR_UNUSED flags, size_t H5_ATTR_UNUSED cd_nelmts,
+      const unsigned int H5_ATTR_UNUSED *cd_values, size_t nbytes,
+      size_t H5_ATTR_UNUSED *buf_size, void H5_ATTR_UNUSED **buf)
 {
     return nbytes;
 }