[svn-r337] Changes since 19980403

----------------------

./configure.in
	Moved setting of compiler warning switches earlier in the file.
	Turned on more warning switches to gcc.

./config/linux
	Prints a warning if the gcc version is less than 2.8.1 since
	that version has problems with register allocation for `long
	long'.

./html/Datatypes.html
	Documented sharing of data types between datasets.

./src/H5G.c
./src/H5Gpublic.h
	Implemented H5Gmove(), H5Glink() and H5Gunlink() for hard
	links.  Still have soft links to do.

./src/H5AC.c
./src/H5ACprivate.h
./src/H5D.c
./src/H5E.c
./src/H5Eprivate.h
./src/H5F.c
./src/H5Farray.c
./src/H5Fcore.c
./src/H5Ffamily.c
./src/H5Fistore.c
./src/H5Flow.c
./src/H5Fprivate.h
./src/H5Fpublic.h
./src/H5Fsec2.c
./src/H5Fstdio.c
./src/H5G.c
./src/H5Gent.c
./src/H5Gnode.c
./src/H5Gpkg.h
./src/H5Gprivate.h
./src/H5HG.c
./src/H5HL.c
./src/H5HLprivate.h
./src/H5I.c
./src/H5Iprivate.h
./src/H5MM.c
./src/H5MMprivate.h
./src/H5O.c
./src/H5Oefl.c
./src/H5Oprivate.h
./src/H5Osdspace.c
./src/H5Oshared.c
./src/H5Ostab.c
./src/H5P.c
./src/H5S.c
./src/H5Ssimp.c
./src/H5T.c
./src/H5Tconv.c
./src/H5Tprivate.h
./src/H5Tpublic.h
./src/H5V.c
./src/H5Vprivate.h
./src/H5detect.c
./src/h5ls.c
./test/cmpd_dset.c
./test/dsets.c
./test/external.c
./test/hyperslab.c
./test/iopipe.c
./test/istore.c
./test/shtype.c
./test/tstab.c
	Fixed comparisons between signed and unsigned values. Fixed
	warnings about unused function arguments.

1 files changed, 12 insertions, 8 deletions

diff --git a/src/H5Fsec2.c b/src/H5Fsec2.c
index 57dd7a6..16395dd 100644
--- a/src/H5Fsec2.c
+++ b/src/H5Fsec2.c
@@ -69,10 +69,11 @@ const H5F_low_class_t	H5F_LOW_SEC2_g[1] = {{
  *-------------------------------------------------------------------------
  */
 static H5F_low_t *
-H5F_sec2_open(const char *name, const H5F_access_t *access_parms, uintn flags,
-	      H5F_search_t *key/*out*/)
+H5F_sec2_open(const char *name,
+	      const H5F_access_t *access_parms __attribute__((unused)),
+	      uintn flags, H5F_search_t *key/*out*/)
 {
-    uintn		    oflags;
+    intn		    oflags;
     H5F_low_t		   *lf = NULL;
     int			    fd;
     struct stat		    sb;
@@ -121,7 +122,8 @@ H5F_sec2_open(const char *name, const H5F_access_t *access_parms, uintn flags,
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5F_sec2_close(H5F_low_t *lf, const H5F_access_t *access_parms)
+H5F_sec2_close(H5F_low_t *lf,
+	       const H5F_access_t *access_parms __attribute__((unused)))
 {
     FUNC_ENTER(H5F_sec2_close, FAIL);
 
@@ -156,7 +158,8 @@ H5F_sec2_close(H5F_low_t *lf, const H5F_access_t *access_parms)
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5F_sec2_read(H5F_low_t *lf, const H5F_access_t *access_parms,
+H5F_sec2_read(H5F_low_t *lf,
+	      const H5F_access_t *access_parms __attribute__((unused)),
 	      const haddr_t *addr, size_t size, uint8 *buf)
 {
     ssize_t		n;
@@ -184,7 +187,7 @@ H5F_sec2_read(H5F_low_t *lf, const H5F_access_t *access_parms,
 
     /* Check easy cases */
     if (0 == size) HRETURN(SUCCEED);
-    if (offset >= lf->eof.offset) {
+    if ((uint64)offset >= lf->eof.offset) {
 	HDmemset(buf, 0, size);
 	HRETURN(SUCCEED);
     }
@@ -224,7 +227,7 @@ H5F_sec2_read(H5F_low_t *lf, const H5F_access_t *access_parms,
     if ((n = read(lf->u.sec2.fd, buf, size)) < 0) {
 	lf->u.sec2.op = H5F_OP_UNKNOWN;
 	HRETURN_ERROR(H5E_IO, H5E_READERROR, FAIL, "read failed");
-    } else if (n < size) {
+    } else if ((size_t)n < size) {
 	HDmemset(buf + n, 0, size - n);
     }
 
@@ -260,7 +263,8 @@ H5F_sec2_read(H5F_low_t *lf, const H5F_access_t *access_parms,
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5F_sec2_write(H5F_low_t *lf, const H5F_access_t *access_parms,
+H5F_sec2_write(H5F_low_t *lf,
+	       const H5F_access_t *access_parms __attribute__((unused)),
 	       const haddr_t *addr, size_t size, const uint8 *buf)
 {
     uint64	mask;