From 203220116aeb29f935c8c86f458ee4e51cd1b077 Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Thu, 29 Aug 2019 17:48:20 +0200
Subject: [PATCH] Temporarily disable getentropy()/getrandom() when using ASAN

ASAN assumes a recent version of the C library has been installed and
may end up intercepting functions that didn't exist if the actual C
library is old.
---
 configure    | 6 ++++++
 configure.ac | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/configure b/configure
index 8187a5f0..f7402df1 100755
--- a/configure
+++ b/configure
@@ -19017,6 +19017,9 @@ $as_echo_n "checking for getrandom with a standard API... " >&6; }
 #ifdef HAVE_SYS_RANDOM_H
 # include <sys/random.h>
 #endif
+#ifdef __SANITIZE_ADDRESS__
+# error A recent libasan version on an old system may intercept nonexistent functions
+#endif
 
 int
 main ()
@@ -19063,6 +19066,9 @@ $as_echo_n "checking for getentropy with a standard API... " >&6; }
 #ifdef HAVE_SYS_RANDOM_H
 # include <sys/random.h>
 #endif
+#ifdef __SANITIZE_ADDRESS__
+# error A recent libasan version on an old system may intercept nonexistent functions
+#endif
 
 int
 main ()
diff --git a/configure.ac b/configure.ac
index a2de3fd4..8c050947 100644
--- a/configure.ac
+++ b/configure.ac
@@ -806,6 +806,9 @@ AS_IF([test "x$EMSCRIPTEN" = "x"],[
 #ifdef HAVE_SYS_RANDOM_H
 # include <sys/random.h>
 #endif
+#ifdef __SANITIZE_ADDRESS__
+# error A recent libasan version on an old system may intercept nonexistent functions
+#endif
 ]], [[
 unsigned char buf;
 (void) getrandom((void *) &buf, 1U, 0U);
@@ -824,6 +827,9 @@ unsigned char buf;
 #ifdef HAVE_SYS_RANDOM_H
 # include <sys/random.h>
 #endif
+#ifdef __SANITIZE_ADDRESS__
+# error A recent libasan version on an old system may intercept nonexistent functions
+#endif
 ]], [[
 #ifdef __APPLE__
 # error getentropy() is currently disabled on Apple operating systems