From cd19d814111b36717a9d9425e6d6454a93bca343 Mon Sep 17 00:00:00 2001
From: jifl <jifl>
Date: Tue, 17 Apr 2007 14:44:41 +0000
Subject: [PATCH]   * pbuf.c: Use s32_t in pbuf_realloc(), as an s16_t can't
 reliably hold   the difference between two u16_t's.

---
 CHANGELOG       | 4 ++++
 src/core/pbuf.c | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG b/CHANGELOG
index d1d44884..f85d8560 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -117,6 +117,10 @@ HISTORY
 
   ++ Bug fixes:
 
+  2007-04-17 Jonathan Larmour
+  * pbuf.c: Use s32_t in pbuf_realloc(), as an s16_t can't reliably hold
+  the difference between two u16_t's.
+
   2007-04-12 Jonathan Larmour
   * icmp.c: Reset IP header TTL in ICMP ECHO responses (bug #19580).
 
diff --git a/src/core/pbuf.c b/src/core/pbuf.c
index 96562cb5..e4f46712 100644
--- a/src/core/pbuf.c
+++ b/src/core/pbuf.c
@@ -395,7 +395,7 @@ pbuf_realloc(struct pbuf *p, u16_t new_len)
 {
   struct pbuf *q;
   u16_t rem_len; /* remaining length */
-  s16_t grow;
+  s32_t grow;
 
   LWIP_ASSERT("pbuf_realloc: sane p->flags", p->flags == PBUF_FLAG_POOL ||
               p->flags == PBUF_FLAG_ROM ||