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-rw-r--r--benchtests/bench-modf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/benchtests/bench-modf.c b/benchtests/bench-modf.c
index 7fae7dc6ac..2b50665b7e 100644
--- a/benchtests/bench-modf.c
+++ b/benchtests/bench-modf.c
@@ -21,7 +21,7 @@ extern double modf (double, double *);
 
 struct args
 {
-  double arg0;
+  volatile double arg0;
 } in[] =
 {
   {  42.42 },