From: Guy Harris <guy@alum.mit.edu>
Date: Thu, 16 Jan 2014 07:03:31 +0000 (-0800)
Subject: memcmp() doesn't modify either of its arguments.
X-Git-Tag: tcpdump-4.6.0~275
X-Git-Url: https://git.tcpdump.org/tcpdump/commitdiff_plain/d45385cd18d1911eda2bbdb4293786280cc8da97

memcmp() doesn't modify either of its arguments.
---

diff --git a/interface.h b/interface.h
index 0ac231ce..783839c1 100644
--- a/interface.h
+++ b/interface.h
@@ -159,7 +159,7 @@ extern void safeputchar(int);
 extern void safeputs(const char *, int);
 
 extern void unaligned_memcpy(void *, const void *, size_t);
-extern int unaligned_memcmp(void *, const void *, size_t);
+extern int unaligned_memcmp(const void *, const void *, size_t);
 
 extern const char *isonsap_string(const u_char *, register u_int);
 extern const char *protoid_string(const u_char *);
diff --git a/netdissect.h b/netdissect.h
index af535de3..01a2c2a8 100644
--- a/netdissect.h
+++ b/netdissect.h
@@ -271,7 +271,7 @@ extern void safeputchar(int);
 extern void safeputs(const char *, int);
 
 extern void unaligned_memcpy(void *, const void *, size_t);
-extern int unaligned_memcmp(void *, const void *, size_t);
+extern int unaligned_memcmp(const void *, const void *, size_t);
 
 #define PLURAL_SUFFIX(n) \
 	(((n) != 1) ? "s" : "")
diff --git a/util.c b/util.c
index f243390b..5b92b474 100644
--- a/util.c
+++ b/util.c
@@ -615,7 +615,7 @@ unaligned_memcpy(void *p, const void *q, size_t l)
 
 /* As with memcpy(), so with memcmp(). */
 int
-unaligned_memcmp(void *p, const void *q, size_t l)
+unaligned_memcmp(const void *p, const void *q, size_t l)
 {
 	return (memcmp(p, q, l));
 }