[tor-commits] [tor-browser/tor-browser-60.5.1esr-8.5-1] Bug 1516642 - Add a function declaration for arc4random_buf in expat. r=peterv

[gk@xxxxxxxxxxxxxx]

commit 8de1662514e5191715055479b503dbb016899e84
Author: Mike Hommey <mh+mozilla@xxxxxxxxxxxx>
Date:   Fri Feb 8 13:48:36 2019 +0000

    Bug 1516642 - Add a function declaration for arc4random_buf in expat. r=peterv
    
    The function has been in bionic (Android's libc since the first commit
    in the upstream repository), but it's not been in stdlib.h until
    recently. As it happens, we have a similar declaration in
    xpcom/base/nsUUIDGenerator.cpp.
    
    Differential Revision: https://phabricator.services.mozilla.com/D19120
    
    --HG--
    extra : moz-landing-system : lando
---
 parser/expat/lib/xmlparse.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/parser/expat/lib/xmlparse.c b/parser/expat/lib/xmlparse.c
index 209f20e094dc..12a7fc232e5f 100644
--- a/parser/expat/lib/xmlparse.c
+++ b/parser/expat/lib/xmlparse.c
@@ -818,6 +818,13 @@ gather_time_entropy(void)
 # include <bsd/stdlib.h>
 #endif
 
+/* BEGIN MOZILLA CHANGE (not all Android NDK versions have the function
+ * declaration, although the function has been available in bionic forever) */
+#if defined(HAVE_ARC4RANDOM_BUF) && defined(__ANDROID__)
+__attribute__((visibility("default"))) void arc4random_buf(void*, size_t);
+#endif
+/* END MOZILLA CHANGE */
+
 static unsigned long
 ENTROPY_DEBUG(const char * label, unsigned long entropy) {
 /* BEGIN MOZILLA CHANGE (don't getenv every time we set up a hash) */

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