commit ec37a89bf3287d6833b58ba1b365d3364990effd
author Arto Kinnunen <arto.kinnunen@arm.com> Thu Nov 28 13:40:32 2019 +0200
committer Arto Kinnunen <arto.kinnunen@arm.com> Thu Nov 28 13:43:02 2019 +0200
tree 7cb48353307bcef57e470a5c062a43f6cb3e4647
parent c5bbdd411c620ed6739c62e7b96e222c9d43225a

Save ROM by using int instead of char

Save 20 bytes of ROM by changing variable type from char to int.

library/hmac_drbg.c

diff --git a/library/hmac_drbg.c b/library/hmac_drbg.c
index 2b79ee5..82703b0 100644
--- a/library/hmac_drbg.c
+++ b/library/hmac_drbg.c
@@ -78,7 +78,7 @@
         mbedtls_md_get_handle( &ctx->md_ctx ) );
     unsigned char rounds = ( additional != NULL && add_len != 0 ) ? 2 : 1;
     unsigned char sep[1];
-    volatile unsigned char flow_counter = 0;
+    volatile unsigned int flow_counter = 0;
     unsigned char K[MBEDTLS_MD_MAX_SIZE];
     int ret = MBEDTLS_ERR_PLATFORM_FAULT_DETECTED;