commit d8352646900c6316af8e2967742ce6a438b04221
Author: Nick Mathewson <[email protected]>
Date: Sun Jul 12 14:48:48 2015 -0400
Disable -Wstack-protector diagnostics in curve25519-donna-helpers.h
This was causing a false positive on our arm builders.
---
src/ext/ed25519/donna/curve25519-donna-helpers.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/src/ext/ed25519/donna/curve25519-donna-helpers.h
b/src/ext/ed25519/donna/curve25519-donna-helpers.h
index e4058ff..ca442fa 100644
--- a/src/ext/ed25519/donna/curve25519-donna-helpers.h
+++ b/src/ext/ed25519/donna/curve25519-donna-helpers.h
@@ -5,6 +5,19 @@
Curve25519 implementation agnostic helpers
*/
+#ifdef __GNUC__
+#define ED_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
+#endif
+
+#if __GNUC__ && ED_GCC_VERSION >= 401
+#if ED_GCC_VERSION >= 406
+#pragma GCC diagnostic push
+#endif
+/* Some versions of GCC (particularly on arm) give us bogus warnings here.
+ * Suppress the GCC warning so we can build Tor with -Wstack-protector. */
+#pragma GCC diagnostic ignored "-Wstack-protector"
+#endif
+
/*
* In: b = 2^5 - 2^0
* Out: b = 2^250 - 2^0
@@ -65,3 +78,7 @@ curve25519_pow_two252m3(bignum25519 two252m3, const
bignum25519 z) {
/* 2^252 - 2^2 */ curve25519_square_times(b, b, 2);
/* 2^252 - 3 */ curve25519_mul_noinline(two252m3, b, z);
}
+
+#if __GNUC__ && ED_GCC_VERSION >= 406
+#pragma GCC diagnostic pop
+#endif
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