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-rw-r--r--sys/crypto/chacha20/chacha.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/crypto/chacha20/chacha.c b/sys/crypto/chacha20/chacha.c
index cb06003b0ecf..0509b05cab22 100644
--- a/sys/crypto/chacha20/chacha.c
+++ b/sys/crypto/chacha20/chacha.c
@@ -50,8 +50,8 @@ typedef struct chacha_ctx chacha_ctx;
a = PLUS(a,b); d = ROTATE(XOR(d,a), 8); \
c = PLUS(c,d); b = ROTATE(XOR(b,c), 7);
-static const char sigma[16] = "expand 32-byte k";
-static const char tau[16] = "expand 16-byte k";
+static const char sigma[16] __nonstring = "expand 32-byte k";
+static const char tau[16] __nonstring = "expand 16-byte k";
LOCAL void
chacha_keysetup(chacha_ctx *x,const u8 *k,u32 kbits)