From cf83fb06120a4a90963fe0c9e2037af03965c5fc Mon Sep 17 00:00:00 2001
From: Raymond Lu <songyulu@hdfgroup.org>
Date: Mon, 13 Jun 2005 11:32:25 -0500
Subject: [svn-r10913] Purpose: Work Around A Compiler Bug

Description: PGCC compiler on mir(AMD Opeteron) has a bug for optimization,
causing the multi driver test to fail.  The compiler handles a macro in this
file incorrectly.

Solution: Slightly change the definition of this macro to avoid the problem
temporarily.

Platforms tested: h5committest, optimization and debug on mir.
---
 src/H5FDmulti.c | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/H5FDmulti.c b/src/H5FDmulti.c
index eae6488..9ab752b 100644
--- a/src/H5FDmulti.c
+++ b/src/H5FDmulti.c
@@ -54,6 +54,10 @@
 #endif
 
 /* Loop through all mapped files */
+#ifdef TMP 
+/*The -O2 optimization of the PGCC in mir has a bug for this macro.  A workaround
+ *is provided here to avoid the problem temporarily until the compiler bug is fixed.
+ *SLU - 2005/6/13 */
 #define UNIQUE_MEMBERS(MAP,LOOPVAR) {					      \
     H5FD_mem_t _unmapped, LOOPVAR;					      \
     hbool_t _seen[H5FD_MEM_NTYPES];					      \
@@ -64,6 +68,23 @@
 	if (H5FD_MEM_DEFAULT==LOOPVAR) LOOPVAR=_unmapped;		      \
 	assert(LOOPVAR>0 && LOOPVAR<H5FD_MEM_NTYPES);			      \
 	if (_seen[LOOPVAR]++) continue;
+#else /*TMP*/
+#define UNIQUE_MEMBERS(MAP,LOOPVAR) {					      \
+    H5FD_mem_t _unmapped, LOOPVAR;					      \
+    hbool_t _seen[H5FD_MEM_NTYPES];					      \
+									      \
+    memset(_seen, 0, sizeof _seen);					      \
+    for (_unmapped=H5FD_MEM_SUPER; _unmapped<H5FD_MEM_NTYPES; _unmapped=(H5FD_mem_t)(_unmapped+1)) {  \
+	LOOPVAR = MAP[_unmapped];					      \
+	if (H5FD_MEM_DEFAULT==LOOPVAR) LOOPVAR=_unmapped;		      \
+	assert(LOOPVAR>0 && LOOPVAR<H5FD_MEM_NTYPES);			      \
+                                                                              \
+        if(_seen[LOOPVAR]) {                                                  \
+            _seen[LOOPVAR]++;                                                 \
+            continue;                                                         \
+        }                                                                     \
+        _seen[LOOPVAR]++;
+#endif /*TMP*/
 
 #ifdef LATER
 #define MAPPED_MEMBERS(MAP,LOOPVAR) {					      \
@@ -718,7 +739,7 @@ H5FD_multi_sb_size(H5FD_t *_file)
     UNIQUE_MEMBERS(file->fa.memb_map, mt) {
 	nseen++;
     } END_MEMBERS;
-    
+
     /* Addresses and EOA markers */
     nbytes += nseen * 2 * 8;
 
@@ -1503,6 +1524,7 @@ H5FD_multi_set_eoa(H5FD_t *_file, haddr_t eoa)
     
     /* Save new eoa for return later */
     file->eoa = eoa;
+
     return 0;
 }
 
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