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-rw-r--r--src/crypto/sha256/sha256block_386.s2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/crypto/sha256/sha256block_386.s b/src/crypto/sha256/sha256block_386.s
index 086a0ab25c..0e27fa02d7 100644
--- a/src/crypto/sha256/sha256block_386.s
+++ b/src/crypto/sha256/sha256block_386.s
@@ -2,6 +2,8 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
+//go:build !purego
+
// SHA256 block routine. See sha256block.go for Go equivalent.
//
// The algorithm is detailed in FIPS 180-4: