memmem is only being used in testing so move it there

tests/api.c

@@ -94147,10 +94147,10 @@ static int test_dtls13_basic_connection_id(void)
     size_t i;
 
     /* We check if the side included the CID in their output */
-#define CLIENT_CID() XMEMMEM(test_ctx.s_buff, test_ctx.s_len, \
-                             client_cid, sizeof(client_cid))
-#define SERVER_CID() XMEMMEM(test_ctx.c_buff, test_ctx.c_len, \
-                             server_cid, sizeof(server_cid))
+#define CLIENT_CID() mymemmem(test_ctx.s_buff, test_ctx.s_len, \
+                              client_cid, sizeof(client_cid))
+#define SERVER_CID() mymemmem(test_ctx.c_buff, test_ctx.c_len, \
+                              server_cid, sizeof(server_cid))
 
     printf("\n");
     for (i = 0; i < XELEM_CNT(params) && EXPECT_SUCCESS(); i++) {

wolfcrypt/src/wc_port.c

@@ -3397,25 +3397,6 @@ char* mystrnstr(const char* s1, const char* s2, unsigned int n)
 }
 #endif
 
-void *mymemmem(const void *haystack, size_t haystacklen,
-             const void *needle, size_t needlelen)
-{
-    size_t i, j;
-    const char* h = (const char*)haystack;
-    const char* n = (const char*)needle;
-    if (needlelen > haystacklen)
-        return NULL;
-    for (i = 0; i <= haystacklen - needlelen; i++) {
-        for (j = 0; j < needlelen; j++) {
-            if (h[i + j] != n[j])
-                break;
-        }
-        if (j == needlelen)
-            return (void*)(h + i);
-    }
-    return NULL;
-}
-
 
 /* custom memory wrappers */
 #ifdef WOLFSSL_NUCLEUS_1_2

wolfssl/test.h

@@ -4853,4 +4853,23 @@ void DEBUG_WRITE_DER(const byte* der, int derSz, const char* fileName);
 
 #define DTLS_CID_BUFFER_SIZE 256
 
+static WC_MAYBE_UNUSED void *mymemmem(const void *haystack, size_t haystacklen,
+                                      const void *needle, size_t needlelen)
+{
+    size_t i, j;
+    const char* h = (const char*)haystack;
+    const char* n = (const char*)needle;
+    if (needlelen > haystacklen)
+        return NULL;
+    for (i = 0; i <= haystacklen - needlelen; i++) {
+        for (j = 0; j < needlelen; j++) {
+            if (h[i + j] != n[j])
+                break;
+        }
+        if (j == needlelen)
+            return (void*)(h + i);
+    }
+    return NULL;
+}
+
 #endif /* wolfSSL_TEST_H */

wolfssl/wolfcrypt/types.h

@@ -730,7 +730,6 @@ typedef struct w64wrapper {
         #define XMEMSET(b,c,l)    memset((b),(c),(l))
         #define XMEMCMP(s1,s2,n)  memcmp((s1),(s2),(n))
         #define XMEMMOVE(d,s,l)   memmove((d),(s),(l))
-        #define XMEMMEM(h,hl,n,nl) mymemmem((h),(hl),(n),(nl))
 
         #define XSTRLEN(s1)       strlen((s1))
         #define XSTRNCPY(s1,s2,n) strncpy((s1),(s2),(n))

wolfssl/wolfcrypt/wc_port.h

@@ -1214,8 +1214,6 @@ WOLFSSL_ABI WOLFSSL_API int wolfCrypt_Cleanup(void);
 #ifndef WOLFSSL_LEANPSK
     char* mystrnstr(const char* s1, const char* s2, unsigned int n);
 #endif
-    WOLFSSL_API void *mymemmem(const void *haystack, size_t haystacklen,
-                 const void *needle, size_t needlelen);
 
 #ifndef FILE_BUFFER_SIZE
     /* default static file buffer size for input, will use dynamic buffer if