X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fmem.c;h=1cc62eafd1221387fb000118d12449c2938a380a;hp=6f80dd33eb740a3822390bae39a40fa7d40d1e80;hb=a91b73fd29493135f248a48b534742436bf89146;hpb=6343829a391df59e46e513c84b6264ee71ad9518

diff --git a/crypto/mem.c b/crypto/mem.c
index 6f80dd33eb..1cc62eafd1 100644
--- a/crypto/mem.c
+++ b/crypto/mem.c
@@ -121,10 +121,11 @@ static void (*set_debug_options_func)(long) = NULL;
 static long (*get_debug_options_func)(void) = NULL;
 #endif
 
-
 int CRYPTO_set_mem_functions(void *(*m)(size_t), void *(*r)(void *, size_t),
 	void (*f)(void *))
 	{
+	/* Dummy call just to ensure OPENSSL_init() gets linked in */
+	OPENSSL_init();
 	if (!allow_customize)
 		return 0;
 	if ((m == 0) || (r == 0) || (f == 0))
@@ -186,6 +187,7 @@ int CRYPTO_set_mem_debug_functions(void (*m)(void *,int,const char *,int,int),
 	{
 	if (!allow_customize_debug)
 		return 0;
+	OPENSSL_init();
 	malloc_debug_func=m;
 	realloc_debug_func=r;
 	free_debug_func=f;
@@ -361,6 +363,10 @@ void *CRYPTO_realloc_clean(void *str, int old_len, int num, const char *file,
 
 	if (num <= 0) return NULL;
 
+	/* We don't support shrinking the buffer. Note the memcpy that copies
+	 * |old_len| bytes to the new buffer, below. */
+	if (num < old_len) return NULL;
+
 	if (realloc_debug_func != NULL)
 		realloc_debug_func(str, NULL, num, file, line, 0);
 	ret=malloc_ex_func(num,file,line);