--- /dev/null
+From e41adf01647c695b80b112b337e76021bb9f30c3 Mon Sep 17 00:00:00 2001
+From: Laurent Bigonville <bigon@bigon.be>
+Date: Tue, 26 Sep 2017 15:15:30 +0200
+Subject: [PATCH] Fix build failure with GCC 7 due to possible truncation of
+ snprintf output
+
+setools fails to build under GCC7 -Wformat -Werror with the following error:
+
+x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wno-sign-compare -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -Ilibqpol -Ilibqpol/include -I/usr/include/python3.6m -c libqpol/policy_extend.c -o build/temp.linux-amd64-3.6/libqpol/policy_extend.o -Werror -Wextra -Waggregate-return -Wfloat-equal -Wformat -Wformat=2 -Winit-self -Wmissing-format-attribute -Wmissing-include-dirs -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wstrict-prototypes -Wunknown-pragmas -Wwrite-strings -Wno-missing-field-initializers -Wno-unused-parameter -Wno-cast-qual -Wno-shadow -Wno-unreachable-code -fno-exceptions
+libqpol/policy_extend.c: In function 'policy_extend':
+libqpol/policy_extend.c:161:27: error: '%04zd' directive output may be truncated writing between 4 and 10 bytes into a region of size 5 [-Werror=format-truncation=]
+ snprintf(buff, 9, "@ttr%04zd", i + 1);
+ ^~~~~
+libqpol/policy_extend.c:161:22: note: directive argument in the range [1, 4294967295]
+ snprintf(buff, 9, "@ttr%04zd", i + 1);
+ ^~~~~~~~~~~
+
+Increase the size of the buffer to avoid collisions
+
+Closes: https://github.com/TresysTechnology/setools/issues/174
+Signed-off-by: Laurent Bigonville <bigon@bigon.be>
+---
+ libqpol/policy_extend.c | 16 ++++++++--------
+ 1 file changed, 8 insertions(+), 8 deletions(-)
+
+diff --git a/libqpol/policy_extend.c b/libqpol/policy_extend.c
+index 742819b..739e184 100644
+--- a/libqpol/policy_extend.c
++++ b/libqpol/policy_extend.c
+@@ -110,7 +110,7 @@ static int qpol_policy_remove_bogus_aliases(qpol_policy_t * policy)
+ * Builds data for the attributes and inserts them into the policydb.
+ * This function modifies the policydb. Names created for attributes
+ * are of the form @ttr<value> where value is the value of the attribute
+- * as a four digit number (prepended with 0's as needed).
++ * as a ten digit number (prepended with 0's as needed).
+ * @param policy The policy from which to read the attribute map and
+ * create the type data for the attributes. This policy will be altered
+ * by this function.
+@@ -125,7 +125,7 @@ static int qpol_policy_build_attrs_from_map(qpol_policy_t * policy)
+ uint32_t bit = 0, count = 0;
+ ebitmap_node_t *node = NULL;
+ type_datum_t *tmp_type = NULL, *orig_type;
+- char *tmp_name = NULL, buff[10];
++ char *tmp_name = NULL, buff[16];
+ int error = 0, retv;
+
+ INFO(policy, "%s", "Generating attributes for policy. (Step 4 of 5)");
+@@ -137,7 +137,7 @@ static int qpol_policy_build_attrs_from_map(qpol_policy_t * policy)
+
+ db = &policy->p->p;
+
+- memset(&buff, 0, 10 * sizeof(char));
++ memset(&buff, 0, 16 * sizeof(char));
+
+ for (i = 0; i < db->p_types.nprim; i++) {
+ /* skip types */
+@@ -158,7 +158,7 @@ static int qpol_policy_build_attrs_from_map(qpol_policy_t * policy)
+ * with this attribute */
+ /* Does not exist */
+ if (db->p_type_val_to_name[i] == NULL){
+- snprintf(buff, 9, "@ttr%04zd", i + 1);
++ snprintf(buff, 15, "@ttr%010zd", i + 1);
+ tmp_name = strdup(buff);
+ if (!tmp_name) {
+ error = errno;
+@@ -240,7 +240,7 @@ static int qpol_policy_build_attrs_from_map(qpol_policy_t * policy)
+ * Builds data for empty attributes and inserts them into the policydb.
+ * This function modifies the policydb. Names created for the attributes
+ * are of the form @ttr<value> where value is the value of the attribute
+- * as a four digit number (prepended with 0's as needed).
++ * as a ten digit number (prepended with 0's as needed).
+ * @param policy The policy to which to add type data for attributes.
+ * This policy will be altered by this function.
+ * @return Returns 0 on success and < 0 on failure; if the call fails,
+@@ -251,7 +251,7 @@ static int qpol_policy_build_attrs_from_map(qpol_policy_t * policy)
+ static int qpol_policy_fill_attr_holes(qpol_policy_t * policy)
+ {
+ policydb_t *db = NULL;
+- char *tmp_name = NULL, buff[10];
++ char *tmp_name = NULL, buff[16];
+ int error = 0, retv = 0;
+ ebitmap_t tmp_bmap = { NULL, 0 };
+ type_datum_t *tmp_type = NULL;
+@@ -265,12 +265,12 @@ static int qpol_policy_fill_attr_holes(qpol_policy_t * policy)
+
+ db = &policy->p->p;
+
+- memset(&buff, 0, 10 * sizeof(char));
++ memset(&buff, 0, 16 * sizeof(char));
+
+ for (i = 0; i < db->p_types.nprim; i++) {
+ if (db->type_val_to_struct[i])
+ continue;
+- snprintf(buff, 9, "@ttr%04zd", i + 1);
++ snprintf(buff, 15, "@ttr%010zd", i + 1);
+ tmp_name = strdup(buff);
+ if (!tmp_name) {
+ error = errno;
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