libxc: add assertion to avoid setting same bit more than once

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>

diff --git a/tools/libxc/xc_sr_restore.c b/tools/libxc/xc_sr_restore.c
index 924dd5534d6359d1f74c18d35af857ab3c6838bc..f48e7fcfe02d72ac42f4a315f45e0deae0e89a68 100644 (file)
--- a/tools/libxc/xc_sr_restore.c
+++ b/tools/libxc/xc_sr_restore.c
@@ -181,6 +181,7 @@ static int pfn_set_populated(struct xc_sr_context *ctx, xen_pfn_t pfn)
         ctx->restore.max_populated_pfn = new_max;
     }
 
+    assert(!test_bit(pfn, ctx->restore.populated_pfns));
     set_bit(pfn, ctx->restore.populated_pfns);
 
     return 0;