From 4d4319b84a92d56a1871f7507de34137fb644fb0 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Tue, 14 Jul 2015 17:43:50 +0200
Subject: [PATCH] -off by 1

---
 configure.ac                        | 22 ++++++++++++++++++++++
 src/mint/taler-mint-httpd_parsing.c |  2 +-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 2ead756dd..f48835dff 100644
--- a/configure.ac
+++ b/configure.ac
@@ -236,6 +236,28 @@ AS_IF([test "x$enableval" = "xno"], [enable_dev=0])
 AC_DEFINE_UNQUOTED([HAVE_DEVELOPER],[$enable_dev],[1 if developer logic is enabled, 0 otherwise])
 
 
+
+# Adam shostack suggests the following for Windows:
+# -D_FORTIFY_SOURCE=2 -fstack-protector-all
+AC_ARG_ENABLE(gcc-hardening,
+   AS_HELP_STRING(--enable-gcc-hardening, enable compiler security checks),
+[if test x$enableval = xyes; then
+    CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-all"
+    CFLAGS="$CFLAGS -fwrapv -fPIE -Wstack-protector"
+    CFLAGS="$CFLAGS --param ssp-buffer-size=1"
+    LDFLAGS="$LDFLAGS -pie"
+fi])
+
+
+# Linker hardening options
+# Currently these options are ELF specific - you can't use this with MacOSX
+AC_ARG_ENABLE(linker-hardening,
+  AS_HELP_STRING(--enable-linker-hardening, enable linker security fixups),
+[if test x$enableval = xyes; then
+   LDFLAGS="$LDFLAGS -z relro -z now"
+fi])
+
+
 # logging
 extra_logging=0
 AC_ARG_ENABLE([logging],
diff --git a/src/mint/taler-mint-httpd_parsing.c b/src/mint/taler-mint-httpd_parsing.c
index 78380f861..1844fa881 100644
--- a/src/mint/taler-mint-httpd_parsing.c
+++ b/src/mint/taler-mint-httpd_parsing.c
@@ -956,7 +956,7 @@ TMH_PARSE_json_data (struct MHD_Connection *connection,
   }
   if (GNUNET_YES != ret)
     release_data (spec,
-                  i);
+                  i - 1);
   return ret;
 }