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wg: fight compiler slightly harder 

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2019-02-05 01:00:52 +01:00
parent 17281d9369
commit 8ba5498590
2 changed files with 2 additions and 2 deletions
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2
src/encoding.c
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@ -119,7 +119,7 @@ bool key_is_zero(const uint8_t key[static WG_KEY_LEN])
for (unsigned int i = 0; i < WG_KEY_LEN; ++i) { for (unsigned int i = 0; i < WG_KEY_LEN; ++i) {
acc |= key[i]; acc |= key[i];
asm("" : "=r" (acc) : "0" (acc)); asm volatile("" : "=r"(acc) : "0"(acc));
} }
return 1 & ((acc - 1) >> 8); return 1 & ((acc - 1) >> 8);
} }