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-rw-r--r--gl/lib/randperm.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/gl/lib/randperm.h b/gl/lib/randperm.h
index 79bbf9fe6..0a0837aa6 100644
--- a/gl/lib/randperm.h
+++ b/gl/lib/randperm.h
@@ -1,4 +1,4 @@
#include "randint.h"
#include <stddef.h>
-size_t randperm_bound (size_t, size_t);
+size_t randperm_bound (size_t, size_t) _GL_ATTRIBUTE_CONST;
size_t *randperm_new (struct randint_source *, size_t, size_t);