commit 65f41af9889a94b988668a288d8d4184ce38e1c7
author Paul Kehrer <paul.l.kehrer@gmail.com> Wed Jul 26 11:26:34 2017 -0500
committer Alex Gaynor <alex.gaynor@gmail.com> Wed Jul 26 12:26:34 2017 -0400
tree 348e25aa4ef4b7834aee8baacc6a9515fd40595d
parent 45f2a42d9c1424b587ff834cfe2c6bec5c8919fe

fix compilation on openbsd (#3814)

the getentropy fallback is only possible on macOS, wrap it in a define
to remove it entirely on the BSDs.

src/_cffi_src/openssl/src/osrandom_engine.c

diff --git a/src/_cffi_src/openssl/src/osrandom_engine.c b/src/_cffi_src/openssl/src/osrandom_engine.c
index 034637c..4fcd34f 100644
--- a/src/_cffi_src/openssl/src/osrandom_engine.c
+++ b/src/_cffi_src/openssl/src/osrandom_engine.c
@@ -223,8 +223,10 @@
     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. */