diff --git a/ChangeLog.d/aria-alt.txt b/ChangeLog.d/aria-alt.txt
new file mode 100644
index 0000000..20aaa2b
--- /dev/null
+++ b/ChangeLog.d/aria-alt.txt
@@ -0,0 +1,5 @@
+Bugfix
+   * Fix some issues affecting MBEDTLS_ARIA_ALT implementations: a misplaced
+     directive in a header and a missing initialization in the self-test.
+   * Fix a missing initialization in the Camellia self-test, affecting
+     MBEDTLS_CAMELLIA_ALT implementations.
diff --git a/ChangeLog.d/host_test-int32.txt b/ChangeLog.d/host_test-int32.txt
new file mode 100644
index 0000000..60ef8e9
--- /dev/null
+++ b/ChangeLog.d/host_test-int32.txt
@@ -0,0 +1,3 @@
+Bugfix
+   * Fix test suite code on platforms where int32_t is not int, such as
+     Arm Cortex-M. Fixes #4530.
diff --git a/include/mbedtls/aria.h b/include/mbedtls/aria.h
index a4b27b3..6c73d10 100644
--- a/include/mbedtls/aria.h
+++ b/include/mbedtls/aria.h
@@ -61,14 +61,14 @@
 /* MBEDTLS_ERR_ARIA_HW_ACCEL_FAILED is deprecated and should not be used. */
 #define MBEDTLS_ERR_ARIA_HW_ACCEL_FAILED      -0x0058  /**< ARIA hardware accelerator failed. */
 
-#if !defined(MBEDTLS_ARIA_ALT)
-// Regular implementation
-//
-
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#if !defined(MBEDTLS_ARIA_ALT)
+// Regular implementation
+//
+
 /**
  * \brief The ARIA context-type definition.
  */
diff --git a/library/aria.c b/library/aria.c
index 1875635..a5786b3 100644
--- a/library/aria.c
+++ b/library/aria.c
@@ -921,7 +921,7 @@
         {                                   \
             if( verbose )                   \
                 mbedtls_printf( "failed\n" );       \
-            return( 1 );                    \
+            goto exit;                              \
         } else {                            \
             if( verbose )                   \
                 mbedtls_printf( "passed\n" );       \
@@ -935,6 +935,7 @@
     int i;
     uint8_t blk[MBEDTLS_ARIA_BLOCKSIZE];
     mbedtls_aria_context ctx;
+    int ret = 1;
 
 #if (defined(MBEDTLS_CIPHER_MODE_CFB) || defined(MBEDTLS_CIPHER_MODE_CTR))
     size_t j;
@@ -946,6 +947,8 @@
     uint8_t buf[48], iv[MBEDTLS_ARIA_BLOCKSIZE];
 #endif
 
+    mbedtls_aria_init( &ctx );
+
     /*
      * Test set 1
      */
@@ -1065,7 +1068,11 @@
         mbedtls_printf( "\n" );
 #endif /* MBEDTLS_CIPHER_MODE_CTR */
 
-    return( 0 );
+    ret = 0;
+
+exit:
+    mbedtls_aria_free( &ctx );
+    return( ret );
 }
 
 #endif /* MBEDTLS_SELF_TEST */
diff --git a/library/camellia.c b/library/camellia.c
index d60f931..f7e0136 100644
--- a/library/camellia.c
+++ b/library/camellia.c
@@ -942,9 +942,11 @@
     unsigned char nonce_counter[16];
     unsigned char stream_block[16];
 #endif
+    int ret = 1;
 
     mbedtls_camellia_context ctx;
 
+    mbedtls_camellia_init( &ctx );
     memset( key, 0, 32 );
 
     for( j = 0; j < 6; j++ ) {
@@ -974,8 +976,7 @@
         {
             if( verbose != 0 )
                 mbedtls_printf( "failed\n" );
-
-            return( 1 );
+            goto exit;
         }
     }
 
@@ -1027,8 +1028,7 @@
             {
                 if( verbose != 0 )
                     mbedtls_printf( "failed\n" );
-
-                return( 1 );
+                goto exit;
             }
         }
 
@@ -1071,8 +1071,7 @@
             {
                 if( verbose != 0 )
                     mbedtls_printf( "failed\n" );
-
-                return( 1 );
+                goto exit;
             }
         }
         else
@@ -1087,8 +1086,7 @@
             {
                 if( verbose != 0 )
                     mbedtls_printf( "failed\n" );
-
-                return( 1 );
+                goto exit;
             }
         }
 
@@ -1100,7 +1098,11 @@
         mbedtls_printf( "\n" );
 #endif /* MBEDTLS_CIPHER_MODE_CTR */
 
-    return( 0 );
+    ret = 0;
+
+exit:
+    mbedtls_camellia_free( &ctx );
+    return( ret );
 }
 
 #endif /* MBEDTLS_SELF_TEST */
diff --git a/tests/suites/host_test.function b/tests/suites/host_test.function
index d83d751..a5fd717 100644
--- a/tests/suites/host_test.function
+++ b/tests/suites/host_test.function
@@ -33,7 +33,7 @@
  *
  * \return      0 if success else 1
  */
-int verify_int( char *str, int *value )
+int verify_int( char *str, int32_t *value )
 {
     size_t i;
     int minus = 0;
@@ -238,7 +238,7 @@
  *
  * \return      0 for success else 1
  */
-static int convert_params( size_t cnt , char ** params , int * int_params_store )
+static int convert_params( size_t cnt , char ** params , int32_t * int_params_store )
 {
     char ** cur = params;
     char ** out = params;
@@ -520,7 +520,7 @@
     char buf[5000];
     char *params[50];
     /* Store for proccessed integer params. */
-    int int_params[50];
+    int32_t int_params[50];
     void *pointer;
 #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
     int stdout_fd = -1;