1 files changed, 58 insertions, 0 deletions
diff --git a/package/network/utils/nftables/patches/203-erec-use-stdio-vasprintf-instead-of-gmp_vasprintf.patch b/package/network/utils/nftables/patches/203-erec-use-stdio-vasprintf-instead-of-gmp_vasprintf.patch
new file mode 100644
index 0000000000..dc4d965497
--- /dev/null
+++ b/package/network/utils/nftables/patches/203-erec-use-stdio-vasprintf-instead-of-gmp_vasprintf.patch
@@ -0,0 +1,58 @@
+From ee23bda1e4a85243fa02dc712f0f323e366dbf8c Mon Sep 17 00:00:00 2001
+From: Steven Barth <cyrus@openwrt.org>
+Date: Mon, 15 Dec 2014 14:14:46 +0100
+Subject: [PATCH 3/5] erec: use stdio vasprintf instead of gmp_vasprintf
+
+Use stdio's vasprintf instead of gmp_vasprintf which is not part
+of the mini-gmp function subset. Furthermore convert the only
+gmp-specific user and allow the compiler to verify format-strings.
+
+Signed-off-by: Steven Barth <cyrus@openwrt.org>
+---
+ src/erec.c     | 6 +++++-
+ src/evaluate.c | 8 ++++++--
+ 2 files changed, 11 insertions(+), 3 deletions(-)
+
+--- a/src/erec.c
++++ b/src/erec.c
+@@ -44,6 +44,7 @@ static void erec_destroy(struct error_re
+ 	xfree(erec);
+ }
+ 
++__attribute__((format(printf, 3, 0)))
+ struct error_record *erec_vcreate(enum error_record_types type,
+ 				  const struct location *loc,
+ 				  const char *fmt, va_list ap)
+@@ -55,10 +56,13 @@ struct error_record *erec_vcreate(enum e
+ 	erec->num_locations	= 0;
+ 	erec_add_location(erec, loc);
+ 
+-	gmp_vasprintf(&erec->msg, fmt, ap);
++	if (vasprintf(&erec->msg, fmt, ap) < 0)
++		erec->msg = NULL;
++
+ 	return erec;
+ }
+ 
++__attribute__((format(printf, 3, 4)))
+ struct error_record *erec_create(enum error_record_types type,
+ 				 const struct location *loc,
+ 				 const char *fmt, ...)
+--- a/src/evaluate.c
++++ b/src/evaluate.c
+@@ -232,9 +232,13 @@ static int expr_evaluate_value(struct ev
+ 	case TYPE_INTEGER:
+ 		mpz_init_bitmask(mask, ctx->ectx.len);
+ 		if (mpz_cmp((*expr)->value, mask) > 0) {
++			char *valstr = mpz_get_str(NULL, 10, (*expr)->value);
++			char *rangestr = mpz_get_str(NULL, 10, mask);
+ 			expr_error(ctx->msgs, *expr,
+-				   "Value %Zu exceeds valid range 0-%Zu",
+-				   (*expr)->value, mask);
++				   "Value %s exceeds valid range 0-%s",
++				   valstr, rangestr);
++			free(valstr);
++			free(rangestr);
+ 			mpz_clear(mask);
+ 			return -1;
+ 		}