[svn-r18212] Description:

    Bring revisions from Coverity fixing branch to trunk:

r18184:
Fixed Coverity issue 373.  Allocated memory freed in line 762 in case of error.

r18185:
Fixed Coverity issues 357 & 358.  Added check for NULL pointer before use.

r18186:
Fix coverity item 65.   Added code to h5unjam to correctly handle failures in
read() and write, and also to correctly handle writes that write less than
requested.

r18187:
Fix coverity items 115 and 116.   Added code to H5Tenum.c to correctly close
opened datatypes in case of failure.

r18188:
Fixed Coverity issue 46.  Check that dataset->shared is not null when freeing
memory after error.

r18190:
Fix coverity item 95.   Added code to H5T_create_vlen to correctly close
allocated datatype in case of failure.

r18191:
Fixed Coverity error 59.  Checked sfirst for -1 value before use in line 10533.

r18192:
Fix Coverity items 121 and 28

Added Asserts:
121: assert that all dimensions of count have values greater than zero.
28: assert curr_span pointer is not null before dereference.

Note: still need too add checks in hyperslab APIs that fail
     when count values are zero, and appropriate tests.

r18194:
Fixed Coverity issues 61 & 62. Checked variable snpoints for value < 0 in line
218.

Tested on:
    Mac OS X/32 10.6.2 (amazon) w/debug & production
    (already daily tested on coverity branch)

1 files changed, 12 insertions, 10 deletions

diff --git a/src/H5Dint.c b/src/H5Dint.c
index 3d5a5e7..bfe16f7 100644
--- a/src/H5Dint.c
+++ b/src/H5Dint.c
@@ -1309,17 +1309,19 @@ done:
     if(ret_value < 0) {
         if(H5F_addr_defined(dataset->oloc.addr) && H5O_close(&(dataset->oloc)) < 0)
             HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release object header")
-        if(dataset->shared->space && H5S_close(dataset->shared->space) < 0)
-            HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataspace")
-        if(dataset->shared->type) {
-            if(dataset->shared->type_id > 0) {
-                if(H5I_dec_ref(dataset->shared->type_id, FALSE) < 0)
-                    HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release datatype")
+        if(dataset->shared) {
+            if(dataset->shared->space && H5S_close(dataset->shared->space) < 0)
+                HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataspace")
+            if(dataset->shared->type) {
+                if(dataset->shared->type_id > 0) {
+                    if(H5I_dec_ref(dataset->shared->type_id, FALSE) < 0)
+                        HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release datatype")
+                } /* end if */
+                else {
+                    if(H5T_close(dataset->shared->type) < 0)
+                        HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release datatype")
+                } /* end else */
             } /* end if */
-            else {
-                if(H5T_close(dataset->shared->type) < 0)
-                    HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release datatype")
-            } /* end else */
         } /* end if */
     } /* end if */