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-rw-r--r--src/math/exp2l.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/math/exp2l.c b/src/math/exp2l.c
index ce085a73..b587308f 100644
--- a/src/math/exp2l.c
+++ b/src/math/exp2l.c
@@ -42,7 +42,7 @@ long double exp2l(long double x)
 
 static const long double huge = 0x1p10000L;
 /* XXX Prevent gcc from erroneously constant folding this. */
-static volatile long double twom10000 = 0x1p-10000L;
+static const volatile long double twom10000 = 0x1p-10000L;
 
 static const double
 redux = 0x1.8p63 / TBLSIZE,