[svn-r8946] Purpose:

    Code cleanup, sorta

Description:
    Added ifdef sections for "H5_USING_PURIFY" in various places in the code,
which are designed to reduce the spurious "uninitialized memory read" warnings
from purify which are actually OK.  Note that this macro will have to be
turned on by adding it to the CFLAGS for the build - I didn't think it was
important enough to add a configure flag for.

    Also, the changes in H5HG.c optimize the walks through the objects in a
heap to only look at the 'used' entries instead of all the 'allocated' entries.

Platforms tested:
    Solaris 2.7 (arabica) w/purify
    Not tested by h5committest

1 files changed, 18 insertions, 13 deletions

diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
index 00b7050..89bd875 100644
--- a/release_docs/RELEASE.txt
+++ b/release_docs/RELEASE.txt
@@ -36,30 +36,35 @@ New Features
 
     Configuration:
     --------------
+        - Added some initial support for making purify (or similar memory
+            checking products) happier by initializing buffers to zero and
+            disabling the internal free list code.  To take advantage of this,
+            define 'H5_USING_PURIFY' in your CFLAGS when building the library.
+            QAK - 2004/07/23
         - Fixed the long compile time of H5detect.c when v7.x Intel Compiler
-	  is used with optimization NOT off.  AKC - 2004/05/20
+	    is used with optimization NOT off.  AKC - 2004/05/20
 	- Fixed configure setting of C++ for OSF1 platform. AKC - 2004/01/06
         - Prefix default is changed from /usr/local to `pwd`/hdf5.
-          AKC - 2003/07/09
+            AKC - 2003/07/09
 
     Library:
     --------
         - 4 new API functions, H5Tencode, H5Tdecode, H5Sencode, H5Sdecode were
-          added to the library.  Given object ID, these functions encode and 
-          decode HDF5 objects(data type and space) information into and from 
-          binary buffer.        SLU - 2004/07/21
+            added to the library.  Given object ID, these functions encode and 
+            decode HDF5 objects(data type and space) information into and from 
+            binary buffer.        SLU - 2004/07/21
         - Modified the way how HDF5 calculates 'pixels_per_scanline' parameter for 
-          SZIP compression. Now there is no restriction on the size and shape of the
-          chunk except that the total number of elements in the chunk cannot be 
-          bigger than 'pixels_per_block' parameter provided by the user.  
+            SZIP compression. Now there is no restriction on the size and shape of the
+            chunk except that the total number of elements in the chunk cannot be 
+            bigger than 'pixels_per_block' parameter provided by the user.  
                                                                      EIP - 2004/07/21  
         - Added support for SZIP without encoder.  Added H5Zget_filter_info
-          and changed H5Pget_filter and H5Pget_filter_by_id to support this
-          change.  JL/NF - 2004/06/30
+            and changed H5Pget_filter and H5Pget_filter_by_id to support this
+            change.  JL/NF - 2004/06/30
         - SZIP always uses K13 compression.  This flag no longer needs to
-          be set when calling H5Pset_szip.  If the flag for CHIP
-          compression is set, it will be ignored (since the two are mutually
-          exclusive).  JL/NF - 2004/6/30
+            be set when calling H5Pset_szip.  If the flag for CHIP
+            compression is set, it will be ignored (since the two are mutually
+            exclusive).  JL/NF - 2004/6/30
         - A new API function H5Fget_name was added.  It returns the name
             of the file by object(file, group, data set, named data type,
             attribute) ID.  SLU - 2004/06/29