[svn-r10915] Purpose: work around a compiler bug

Description:

while compiling in mir with pgcc -O2 a condition

if (name ) {
  do_something(name);
  }

 is executed when name is NULL

Solution:
avoid the error by checking the NULL pointer inside do_something(name);


Platforms tested:
linux (mir with pgcc 6.0)


Misc. update:

2 files changed, 7 insertions, 2 deletions

diff --git a/tools/lib/h5diff_dset.c b/tools/lib/h5diff_dset.c
index a558987..1887df8 100644
--- a/tools/lib/h5diff_dset.c
+++ b/tools/lib/h5diff_dset.c
@@ -362,10 +362,12 @@ hsize_t diff_datasetid( hid_t dset1_id,
  * array compare
  *-------------------------------------------------------------------------
  */
- if (obj1_name)
+ if (obj1_name) {
   name1=diff_basename(obj1_name);
- if (obj2_name)
+ }
+ if (obj2_name) {
   name2=diff_basename(obj2_name);
+ }
  nfound = diff_array(buf1, 
                      buf2,
                      nelmts1,
diff --git a/tools/lib/h5diff_util.c b/tools/lib/h5diff_util.c
index 4f1e97c..34686c6 100644
--- a/tools/lib/h5diff_util.c
+++ b/tools/lib/h5diff_util.c
@@ -283,6 +283,9 @@ diff_basename(const char *name)
 {
  size_t i;
  
+ if (name==NULL)
+  return;
+
  /* Find the end of the base name */
  i = strlen(name);
  while (i>0 && '/'==name[i-1])