diff -up hdf5-1.10.7/testpar/t_cache.c.warning hdf5-1.10.7/testpar/t_cache.c

--- hdf5-1.10.7/testpar/t_cache.c.warning	2020-09-04 15:50:58.000000000 -0600

+++ hdf5-1.10.7/testpar/t_cache.c	2020-10-07 20:23:01.877566435 -0600

@@ -80,8 +80,8 @@ long local_pins           = 0;

 /* the following fields are used by the server process only */

-int total_reads           = 0;

-int total_writes           = 0;

+unsigned total_reads           = 0;

+unsigned total_writes           = 0;

 /*****************************************************************************

@@ -176,8 +176,8 @@ struct datum

     hbool_t        local_pinned;

     hbool_t        cleared;

     hbool_t             flushed;

-    int            reads;

-    int            writes;

+    unsigned       reads;

+    unsigned       writes;

     int            index;

     struct H5AC_aux_t * aux_ptr;

 };

@@ -2445,12 +2445,12 @@ static herr_t

 datum_image_len(const void *thing, size_t *image_len)

 {

     int idx;

-    struct datum * entry_ptr;

+    const struct datum * entry_ptr;

     HDassert( thing );

     HDassert( image_len );

-    entry_ptr = (struct datum *)thing;

+    entry_ptr = (const struct datum *)thing;

     idx = addr_to_datum_index(entry_ptr->base_addr);

@@ -4612,7 +4612,7 @@ verify_entry_reads(haddr_t addr,

                    int expected_entry_reads)

 {

     hbool_t success = TRUE;

-    int reported_entry_reads = 0;

+    unsigned reported_entry_reads = 0;

     struct mssg_t mssg;

     if ( success ) {

@@ -4719,7 +4719,7 @@ verify_entry_writes(haddr_t addr,

                     int expected_entry_writes)

 {

     hbool_t success = TRUE;

-    int reported_entry_writes = 0;

+    unsigned reported_entry_writes = 0;

     struct mssg_t mssg;

     if ( success ) {

@@ -4824,7 +4824,7 @@ static hbool_t

 verify_total_reads(int expected_total_reads)

 {

     hbool_t success = TRUE; /* will set to FALSE if appropriate. */

-    long reported_total_reads;

+    unsigned reported_total_reads;

     struct mssg_t mssg;

     if ( success ) {