From 9b1056ef0eca8457e4fe374d722fe7a37fadbafe Mon Sep 17 00:00:00 2001
From: Erik Ekman <erik@kryo.se>
Date: Fri, 19 Jun 2020 13:24:30 +0200
Subject: [PATCH] fuzz: Fix compile error in simulated glibc rand
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When using LWIP_RAND_FOR_FUZZ_SIMULATE_GLIBC:

fuzz_common.c: In function ‘lwip_fuzz_rand’:
fuzz_common.c:683:11: error: comparison of integer expressions of different signedness: ‘int’ and ‘long unsigned int’ [-Werror=sign-compare]
  683 |   if (idx >= sizeof(rand_nrs)/sizeof((rand_nrs)[0])) {
      |           ^~
cc1: all warnings being treated as errors
---
 test/fuzz/fuzz_common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/fuzz/fuzz_common.c b/test/fuzz/fuzz_common.c
index 93c09188..da4b8222 100644
--- a/test/fuzz/fuzz_common.c
+++ b/test/fuzz/fuzz_common.c
@@ -677,7 +677,7 @@ u32_t lwip_fuzz_rand(void)
     0x19495cff, 0x2ae8944a, 0x625558ec, 0x238e1f29, 0x46e87ccd,
     0x3d1b58ba, 0x507ed7ab, 0x2eb141f2, 0x41b71efb, 0x79e2a9e3,
     0x7545e146, 0x515f007c, 0x5bd062c2, 0x12200854, 0x4db127f8};
-  static int idx = 0;
+  static unsigned idx = 0;
   u32_t ret = rand_nrs[idx];
   idx++;
   if (idx >= sizeof(rand_nrs)/sizeof((rand_nrs)[0])) {