fix compilation on openbsd (pyca#3814)

the getentropy fallback is only possible on macOS, wrap it in a define to remove it entirely on the BSDs.
i-stam · Jul 26, 2017 · 65f41af · 65f41af
1 parent 45f2a42
commit 65f41af
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/_cffi_src/openssl/src/osrandom_engine.c b/src/_cffi_src/openssl/src/osrandom_engine.c
@@ -223,8 +223,10 @@ static int osrandom_rand_bytes(unsigned char *buffer, int size) {
     int res;
 
     switch(getentropy_works) {
+#if defined(__APPLE__)
     case CRYPTOGRAPHY_OSRANDOM_GETENTROPY_FALLBACK:
         return dev_urandom_read(buffer, size);
+#endif
     case CRYPTOGRAPHY_OSRANDOM_GETENTROPY_WORKS:
         while (size > 0) {
             /* OpenBSD and macOS restrict maximum buffer size to 256. */