Add patch to fix test on nginx proxy

Author: joelwurtz

configure.ac

@@ -36,7 +36,7 @@ AC_ARG_WITH([proxy_version], [AS_HELP_STRING([--with-proxy-version],
     [proxy version to output])],
     [PROXY_VERSION=$withval], [PROXY_VERSION=libnginx-mod-redirectionio:dev])
 
-PATCH_FILES=
+PATCH_FILES="patches/glibc_bug_fixed.patch"
 
 AC_ARG_ENABLE([debian-header],
     AS_HELP_STRING([--enable-debian-header], [Patch nginx source with the debian header patch.]), [

patches/glibc_bug_fixed.patch

@@ -0,0 +1,29 @@
+From 1ef5c9ce6f03907dad1677d25f108d2bf59a5c15 Mon Sep 17 00:00:00 2001
+From: Maxim Dounin <[email protected]>
+Date: Wed, 23 May 2018 16:38:16 +0300
+Subject: [PATCH] Removed glibc crypt_r() bug workaround (ticket #1469).
+
+The bug in question was fixed in glibc 2.3.2 and is no longer expected
+to manifest itself on real servers.  On the other hand, the workaround
+causes compilation problems on various systems.  Previously, we've
+already fixed the code to compile with musl libc (fd6fd02f6a4d), and
+now it is broken on Fedora 28 where glibc's crypt library was replaced
+by libxcrypt.  So the workaround was removed.
+---
+ src/os/unix/ngx_user.c | 4 ----
+ 1 file changed, 4 deletions(-)
+
+diff --git a/src/os/unix/ngx_user.c b/src/os/unix/ngx_user.c
+index 7ebe2b576c..b3d81d07b7 100644
+--- a/src/os/unix/ngx_user.c
++++ b/src/os/unix/ngx_user.c
+@@ -21,10 +21,6 @@ ngx_libc_crypt(ngx_pool_t *pool, u_char *key, u_char *salt, u_char **encrypted)
+     struct crypt_data   cd;
+
+     cd.initialized = 0;
+-#ifdef __GLIBC__
+-    /* work around the glibc bug */
+-    cd.current_salt[0] = ~salt[0];
+-#endif
+
+     value = crypt_r((char *) key, (char *) salt, &cd);