1 files changed, 16 insertions, 0 deletions
diff --git a/src/H5detect.c b/src/H5detect.c
index 683b76b..8ee0fcc 100644
--- a/src/H5detect.c
+++ b/src/H5detect.c
@@ -898,6 +898,22 @@ main(void)
     detected_t          d[MAXDETECT];
     int                 nd = 0;
 
+#if defined(HAVE_SETSYSINFO) && defined(SSI_NVPAIRS)
+#if defined(UAC_NOPRINT) && defined(UAC_SIGBUS)
+    /*
+     * Make sure unaligned access generates SIGBUS and doesn't print warning
+     * messages so that we can detect alignment constraints on the DEC Alpha.
+     */
+    int			nvpairs[2];
+    nvpairs[0] = SSIN_UACPROC;
+    nvpairs[1] = UAC_NOPRINT | UAC_SIGBUS;
+    if (setsysinfo(SSI_NVPAIRS, nvpairs, 1, 0, 0)<0) {
+	fprintf(stderr, "H5detect: unable to turn off UAC handling: %s\n",
+		strerror(errno));
+    }
+#endif
+#endif
+    
     print_header();
 
     DETECT_I(signed char,	  SCHAR,   d[nd]); nd++;