commit 048168aa377e40f5e103a48d634a1c7b7035bedd
author Sebastian Bøe <sebastian.boe@nordicsemi.no> Fri Mar 01 10:30:44 2019 +0100
committer Fabio Utzig <utzig@utzig.org> Mon Mar 04 09:20:14 2019 -0300
tree 38a8f61562828562234aa7cadf7a41c0e65aa3f1
parent c2216cc5b5b12d23fe85cf6df80aee7e3d4ccfb3

zephyr: Fix bug where prototype of SNPRINTF was not declared

Fix #10990.

A warning is triggered when snprintf is used because it is being
declared / configured incorrectly. The MBEDTLS configuration is
defaulting to disabling all of LIBC, and then explicitly enabling the
LIBC functions in use, this has been done for printf with
MBEDTLS_PLATFORM_STD_PRINTF, but not for
MBEDTLS_PLATFORM_STD_SNPRINTF.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>

boot/zephyr/include/config-rsa.h

diff --git a/boot/zephyr/include/config-rsa.h b/boot/zephyr/include/config-rsa.h
index f6bba7e..2e1153d 100644
--- a/boot/zephyr/include/config-rsa.h
+++ b/boot/zephyr/include/config-rsa.h
@@ -46,6 +46,7 @@
 
 #define MBEDTLS_PLATFORM_EXIT_ALT
 #define MBEDTLS_PLATFORM_PRINTF_ALT
+#define MBEDTLS_PLATFORM_SNPRINTF_ALT
 
 #if !defined(CONFIG_ARM)
 #define MBEDTLS_HAVE_ASM