--- openssl-1.0.1g.orig/crypto/cryptlib.h
+++ openssl-1.0.1g/crypto/cryptlib.h
@@ -100,7 +100,7 @@ extern "C" {
 
 void OPENSSL_cpuid_setup(void);
 extern unsigned int OPENSSL_ia32cap_P[];
-void OPENSSL_showfatal(const char *fmta,...);
+void OPENSSL_showfatal(const char *fmta,...) __attribute__ ((format (printf, 1, 2)));
 void *OPENSSL_stderr(void);
 extern int OPENSSL_NONPIC_relocated;
 
--- openssl-1.0.1g.orig/crypto/crypto.h
+++ openssl-1.0.1g/crypto/crypto.h
@@ -487,15 +487,15 @@ void CRYPTO_get_mem_debug_functions(void
 				    void (**so)(long),
 				    long (**go)(void));
 
-void *CRYPTO_malloc_locked(int num, const char *file, int line);
+void *CRYPTO_malloc_locked(int num, const char *file, int line) __attribute__((alloc_size(1)));
 void CRYPTO_free_locked(void *ptr);
-void *CRYPTO_malloc(int num, const char *file, int line);
+void *CRYPTO_malloc(int num, const char *file, int line) __attribute__((alloc_size(1)));
 char *CRYPTO_strdup(const char *str, const char *file, int line);
 void CRYPTO_free(void *ptr);
-void *CRYPTO_realloc(void *addr,int num, const char *file, int line);
+void *CRYPTO_realloc(void *addr,int num, const char *file, int line) __attribute__((alloc_size(2)));
 void *CRYPTO_realloc_clean(void *addr,int old_num,int num,const char *file,
-			   int line);
-void *CRYPTO_remalloc(void *addr,int num, const char *file, int line);
+			   int line) __attribute__((alloc_size(3)));
+void *CRYPTO_remalloc(void *addr,int num, const char *file, int line) __attribute__((alloc_size(2)));
 
 void OPENSSL_cleanse(void *ptr, size_t len);
 
--- openssl-1.0.1g.orig/crypto/buffer/buffer.h
+++ openssl-1.0.1g/crypto/buffer/buffer.h
@@ -87,7 +87,7 @@ int	BUF_MEM_grow(BUF_MEM *str, size_t le
 int	BUF_MEM_grow_clean(BUF_MEM *str, size_t len);
 char *	BUF_strdup(const char *str);
 char *	BUF_strndup(const char *str, size_t siz);
-void *	BUF_memdup(const void *data, size_t siz);
+void *	BUF_memdup(const void *data, size_t siz) __attribute__((alloc_size(2)));
 void	BUF_reverse(unsigned char *out, const unsigned char *in, size_t siz);
 
 /* safe string functions */